[FB] Re-add fb_readq for non-sparc.

This was originally added in rev 1.26.1.2, then dropped 
during a merge in rev 1.33.  Please be more careful with
those merges, people.

include/linux/fb.h

@@ -425,6 +425,7 @@ struct fb_info {
 #define fb_readb __raw_readb
 #define fb_readw __raw_readw
 #define fb_readl __raw_readl
+#define fb_readq __raw_readq
 #define fb_writeb __raw_writeb
 #define fb_writew __raw_writew
 #define fb_writel __raw_writel