fbdev: s1d13xxxfb: add accelerated bitblt functions

Add accelerated bitblt functions to s1d13xxx based video chipsets, more
specificly functions copyarea and fillrect.

It has only been tested and activated for 13506 chipsets but is expected
to work for the majority of s1d13xxx based chips.  This patch also cleans
up the driver with respect of whitespaces and other formatting issues.  We
update the current status comments.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/video/s1d13xxxfb.h

@@ -136,6 +136,15 @@
 #define S1DREG_DELAYOFF			0xFFFE
 #define S1DREG_DELAYON			0xFFFF
 
+#define BBLT_FIFO_EMPTY			0x00
+#define BBLT_FIFO_NOT_EMPTY		0x40
+#define BBLT_FIFO_NOT_FULL		0x30
+#define BBLT_FIFO_HALF_FULL		0x20
+#define BBLT_FIFO_FULL			0x10
+
+#define BBLT_SOLID_FILL			0x0c
+
+
 /* Note: all above defines should go in separate header files
    when implementing other S1D13xxx chip support. */