[MIPS] Undefine scr_writew and scr_readw in <asm/vga.h>. This is gluing the build of cirrusfb but really the mess that would need cleaning and fixing is <video/vga.h> and <linux/vt_buffer.h> ... Signed-off-by: Ralf Baechle <[e-mail]>

include/asm-mips/vga.h

···
  *  <linux/vt_buffer.h> has already done the right job for us.
  */
 
+#undef scr_writew
+#undef scr_readw
+
 static inline void scr_writew(u16 val, volatile u16 *addr)
 {
 	*addr = cpu_to_le16(val);