lcd: add SPI-based LCD and backlight driver for SHARP corgi/spitz

The driver is based on different source files including corgi_ssp.c,
corgi_lcd.c and corgi_bl.c, previously authored by Richard Purdie
and many others.

The LCD and Backlight device actually share the same SPI device, so
they are made into this single driver.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 452b770..f5406cd 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -24,6 +24,13 @@
 	  To have support for your specific LCD panel you will have to
 	  select the proper drivers which depend on this option.
 
+config LCD_CORGI
+	tristate "LCD Panel support for SHARP corgi/spitz model"
+	depends on LCD_CLASS_DEVICE && SPI_MASTER && PXA_SHARPSL
+	help
+	  Say y here to support the LCD panels usually found on SHARP
+	  corgi (C7x0) and spitz (Cxx00) models.
+
 config LCD_LTV350QV
 	tristate "Samsung LTV350QV LCD Panel"
 	depends on LCD_CLASS_DEVICE && SPI_MASTER