OMAP: OMAPFB: Adding help for FB_OMAP_LCD_VGA option

CONFIG_FB_OMAP_LCD_VGA option is present in drivers/video/omap
There is no explaination about what this flag does.
Lets add information about it.

FB_OMAP_LCD_VGA flag sets resolution of display to VGA (640 X 480).
The default resolution of 3430 LDP is 320 X 240.

Signed-off-by: Mayuresh Janorkar <mayur@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap/Kconfig

@@ -11,7 +11,11 @@ config FB_OMAP
 config FB_OMAP_LCD_VGA
         bool "Use LCD in VGA mode"
 	        depends on MACH_OMAP_3430SDP || MACH_OMAP_LDP
-
+		help
+		  Set LCD resolution as VGA (640 X 480).
+		  Default resolution without this option is QVGA(320 X 240).
+		  Please take a look at drivers/video/omap/lcd_ldp.c file
+		  for lcd driver code.
 choice
 	depends on FB_OMAP && MACH_OVERO
 	prompt "Screen resolution"