fbdev: consolidate common drawing functions into a header file

Consolidate common drawing functions into a single header file.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/syscopyarea.c

@@ -19,17 +19,7 @@
 #include <linux/slab.h>
 #include <asm/types.h>
 #include <asm/io.h>
-
-    /*
-     *  Compose two values, using a bitmask as decision value
-     *  This is equivalent to (a & mask) | (b & ~mask)
-     */
-
-static inline unsigned long
-comp(unsigned long a, unsigned long b, unsigned long mask)
-{
-    return ((a ^ b) & mask) ^ b;
-}
+#include "fb_draw.h"
 
     /*
      *  Generic bitwise copy algorithm