s3c-fb: fix distortedness situation for the mode more then 24bpp

It has been working fine at 16bpp but in case of pixel format more then
24bpp it would occur distortedness situation on that mode.  so this patch
set the word swap control bit of WINCONx to 1 as default value.  but it
should be set to 0 in case that each ENLOCAL bit of WINCON0 ~ 2 registers
is enabled.  this issue would be solved with local path feature soon.

Signed-off-by: InKi Dae <inki.dae@samsung.com>
Reviewed-by: KyungMin Park <kyungmin.park.samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/arm/plat-samsung/include/plat/regs-fb.h

@@ -173,6 +173,7 @@
 #define WINCONx_BITSWP				(1 << 18)
 #define WINCONx_BYTSWP				(1 << 17)
 #define WINCONx_HAWSWP				(1 << 16)
+#define WINCONx_WSWP				(1 << 15)
 #define WINCONx_BURSTLEN_MASK			(0x3 << 9)
 #define WINCONx_BURSTLEN_SHIFT			(9)
 #define WINCONx_BURSTLEN_16WORD			(0x0 << 9)

drivers/video/s3c-fb.c

@@ -424,6 +424,7 @@ static int s3c_fb_set_par(struct fb_info *info)
 		else
 			data |= WINCON0_BPPMODE_24BPP_888;
 
+		data |= WINCONx_WSWP;
 		data |= WINCONx_BURSTLEN_16WORD;
 		break;
 	}