common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/mpc8349emds/mpc8349emds.c b/board/freescale/mpc8349emds/mpc8349emds.c
index 688bffa..576f04c 100644
--- a/board/freescale/mpc8349emds/mpc8349emds.c
+++ b/board/freescale/mpc8349emds/mpc8349emds.c
@@ -9,6 +9,7 @@
 #include <init.h>
 #include <ioports.h>
 #include <mpc83xx.h>
+#include <asm/bitops.h>
 #include <asm/mpc8349_pci.h>
 #include <i2c.h>
 #include <spi.h>