[ARM] 4737/1: Refactor corgi_lcd to improve readability + bugfix

This patch refactors the code in corgi_lcd.c moving it to the board
specific corgi and spitz files where appropriate instead of the
existing ifdef mess which hinders readability.

Fix spitz_get_hsync_len() to call get_hsync_invperiod so pxafb can be
compiled as a module.

The confusing variables which represent the inverse horizintal sync
period are renamed to "invperiod" consistently.

An incorrect comment in corgi_ts.c is also corrected.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/sharpsl.h b/arch/arm/mach-pxa/sharpsl.h
index da4769c..047909a 100644
--- a/arch/arm/mach-pxa/sharpsl.h
+++ b/arch/arm/mach-pxa/sharpsl.h
@@ -26,28 +26,15 @@
 
 
 /*
- * SharpSL Backlight
+ * SharpSL/Corgi LCD Driver
  */
-void corgi_bl_set_intensity(int intensity);
-void spitz_bl_set_intensity(int intensity);
-void akita_bl_set_intensity(int intensity);
-
-
-/*
- * SharpSL Touchscreen Driver
- */
-unsigned long corgi_get_hsync_len(void);
-unsigned long spitz_get_hsync_len(void);
-void corgi_put_hsync(void);
-void spitz_put_hsync(void);
-void corgi_wait_hsync(void);
-void spitz_wait_hsync(void);
+void corgi_lcdtg_suspend(void);
+void corgi_lcdtg_hw_init(int mode);
 
 
 /*
  * SharpSL Battery/PM Driver
  */
-
 #define READ_GPIO_BIT(x)    (GPLR(x) & GPIO_bit(x))
 
 /* MAX1111 Channel Definitions */