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>

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>

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>

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>

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;

include/linux/kgdb.h

@@ -13,7 +13,6 @@
 #ifndef _KGDB_H_
 #define _KGDB_H_
 
-#include <linux/serial_8250.h>
 #include <linux/linkage.h>
 #include <linux/init.h>
 #include <linux/atomic.h>

kernel/debug/debug_core.c

@@ -29,6 +29,7 @@
  */
 #include <linux/pid_namespace.h>
 #include <linux/clocksource.h>
+#include <linux/serial_core.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
 #include <linux/console.h>

kernel/debug/gdbstub.c

@@ -31,6 +31,7 @@
 #include <linux/kernel.h>
 #include <linux/kgdb.h>
 #include <linux/kdb.h>
+#include <linux/serial_core.h>
 #include <linux/reboot.h>
 #include <linux/uaccess.h>
 #include <asm/cacheflush.h>