include: Drop <common.h> from include lists

At this point, we don't need to have <common.h> be included because of
properties in the header itself, it only includes other common header
files. We've also audited the code enough at this point that we can drop
<common.h> from being included in headers and rely on code to have the
correct inclusions themselves, or at least <common.h>.

Signed-off-by: Tom Rini <trini@konsulko.com>

include/spi.h

@@ -9,7 +9,6 @@
 #ifndef _SPI_H_
 #define _SPI_H_
 
-#include <common.h>
 #include <linux/bitops.h>
 
 /* SPI mode flags */