lcd, pxafb: move the pxafb to drivers/video

Since the lcd code was compiled unconditionally for pxa also add
CONFIG_PXA_LCD to the boards using this framebuffer. Since
driver/video contains video and lcd drivers, add lcd to the name
to make clear it belongs to common/lcd.c.

cc: Anatolij Gustschin <agust@denx.de>
cc: Cliff Brake <cliff.brake@gmail.com>
cc: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/include/configs/palmtc.h b/include/configs/palmtc.h
index 64771e7..70fe05c 100644
--- a/include/configs/palmtc.h
+++ b/include/configs/palmtc.h
@@ -74,6 +74,7 @@
 #define	CONFIG_CMD_ENV
 #define	CONFIG_CMD_MMC
 #define	CONFIG_LCD
+#define	CONFIG_PXA_LCD
 
 /*
  * MMC Card Configuration