kgdb: remove #include <linux/serial_8250.h> from kgdb.h

There's no reason kgdb.h itself needs to include the 8250 serial port
header file.  So push it down to the _very_ limited number of individual
drivers that need the values in that file, and fix up the places where
people really wanted serial_core.h and platform_device.h.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/gpu/drm/gma500/cdv_intel_dp.c b/drivers/gpu/drm/gma500/cdv_intel_dp.c
index 51044cc..88d9ef6 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_dp.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_dp.c
@@ -27,6 +27,7 @@
 
 #include <linux/i2c.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index 26a50b0..5dafcf1 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -23,6 +23,7 @@
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
+#include <linux/serial_core.h>
 #include <linux/interrupt.h>
 #include <linux/hrtimer.h>
 #include <linux/tick.h>
diff --git a/drivers/video/auo_k190x.c b/drivers/video/auo_k190x.c
index 97f7935..53846cb 100644
--- a/drivers/video/auo_k190x.c
+++ b/drivers/video/auo_k190x.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/gpio.h>
+#include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/fb.h>
 #include <linux/delay.h>
diff --git a/drivers/video/backlight/ot200_bl.c b/drivers/video/backlight/ot200_bl.c
index 469cf0f..fdbb6ee 100644
--- a/drivers/video/backlight/ot200_bl.c
+++ b/drivers/video/backlight/ot200_bl.c
@@ -14,6 +14,7 @@
 #include <linux/fb.h>
 #include <linux/backlight.h>
 #include <linux/gpio.h>
+#include <linux/platform_device.h>
 #include <linux/cs5535.h>
 
 static struct cs5535_mfgpt_timer *pwm_timer;