media: exynos4-is: fix kernel-doc warnings

Fix those kernel-doc warnings:

    drivers/media/platform/exynos4-is/mipi-csis.c:229: warning: No description found for parameter 'clk_frequency'
    drivers/media/platform/exynos4-is/mipi-csis.c:229: warning: Excess struct member 'clock_frequency' description in 'csis_state'
    drivers/media/platform/exynos4-is/media-dev.c:69: warning: No description found for parameter 'p'
    drivers/media/platform/exynos4-is/media-dev.c:160: warning: No description found for parameter 'p'
    drivers/media/platform/exynos4-is/media-dev.c:160: warning: No description found for parameter 'on'
    drivers/media/platform/exynos4-is/media-dev.c:160: warning: Excess function parameter 'fimc' description in 'fimc_pipeline_s_power'
    drivers/media/platform/exynos4-is/media-dev.c:160: warning: Excess function parameter 'state' description in 'fimc_pipeline_s_power'
    drivers/media/platform/exynos4-is/media-dev.c:229: warning: No description found for parameter 'ep'
    drivers/media/platform/exynos4-is/media-dev.c:260: warning: No description found for parameter 'ep'
    drivers/media/platform/exynos4-is/media-dev.c:260: warning: Excess function parameter 'fimc' description in '__fimc_pipeline_close'
    drivers/media/platform/exynos4-is/media-dev.c:288: warning: No description found for parameter 'ep'
    drivers/media/platform/exynos4-is/media-dev.c:288: warning: Excess function parameter 'pipeline' description in '__fimc_pipeline_s_stream'
    drivers/media/platform/exynos4-is/media-dev.c:916: warning: No description found for parameter 'fmd'
    drivers/media/platform/exynos4-is/fimc-capture.c:155: warning: No description found for parameter 'ctx'
    drivers/media/platform/exynos4-is/fimc-capture.c:868: warning: No description found for parameter 'num_planes'
    drivers/media/platform/exynos4-is/fimc-capture.c:1108: warning: No description found for parameter 'fimc'

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index c15596b..0ef583c 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -60,6 +60,7 @@
 
 /**
  * fimc_pipeline_prepare - update pipeline information with subdevice pointers
+ * @p: fimc pipeline
  * @me: media entity terminating the pipeline
  *
  * Caller holds the graph mutex.
@@ -151,8 +152,8 @@
 
 /**
  * fimc_pipeline_s_power - change power state of all pipeline subdevs
- * @fimc: fimc device terminating the pipeline
- * @state: true to power on, false to power off
+ * @p: fimc device terminating the pipeline
+ * @on: true to power on, false to power off
  *
  * Needs to be called with the graph mutex held.
  */
@@ -219,6 +220,7 @@
 /**
  * __fimc_pipeline_open - update the pipeline information, enable power
  *                        of all pipeline subdevs and the sensor clock
+ * @ep: fimc device terminating the pipeline
  * @me: media entity to start graph walk with
  * @prepare: true to walk the current pipeline and acquire all subdevs
  *
@@ -252,7 +254,7 @@
 
 /**
  * __fimc_pipeline_close - disable the sensor clock and pipeline power
- * @fimc: fimc device terminating the pipeline
+ * @ep: fimc device terminating the pipeline
  *
  * Disable power of all subdevs and turn the external sensor clock off.
  */
@@ -281,7 +283,7 @@
 
 /**
  * __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs
- * @pipeline: video pipeline structure
+ * @ep: video pipeline structure
  * @on: passed as the s_stream() callback argument
  */
 static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on)
@@ -902,6 +904,7 @@
 
 /**
  * fimc_md_create_links - create default links between registered entities
+ * @fmd: fimc media device
  *
  * Parallel interface sensor entities are connected directly to FIMC capture
  * entities. The sensors using MIPI CSIS bus are connected through immutable