dma: ipu: remove the use of ipu_platform_data

The struct ipu_platform_data is used by platform code to pass
MXC_IPU_IRQ_START to ipu-core driver.  We can save it by having
ipu-core driver call irq_alloc_descs to get the irq_base.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
diff --git a/arch/arm/mach-imx/mach-vpr200.c b/arch/arm/mach-imx/mach-vpr200.c
index e36eb2c..1aa5622 100644
--- a/arch/arm/mach-imx/mach-vpr200.c
+++ b/arch/arm/mach-imx/mach-vpr200.c
@@ -87,10 +87,6 @@
 	}
 };
 
-static const struct ipu_platform_data mx3_ipu_data __initconst = {
-	.irq_base = MXC_IPU_IRQ_START,
-};
-
 static struct mx3fb_platform_data mx3fb_pdata __initdata = {
 	.name		= "PT0708048",
 	.mode		= fb_modedb,
@@ -290,7 +286,7 @@
 	imx35_add_imx_uart0(NULL);
 	imx35_add_imx_uart2(NULL);
 
-	imx35_add_ipu_core(&mx3_ipu_data);
+	imx35_add_ipu_core();
 	imx35_add_mx3_sdc_fb(&mx3fb_pdata);
 
 	imx35_add_fsl_usb2_udc(&otg_device_pdata);