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/drivers/pci/pci-rcar-gen3.c b/drivers/pci/pci-rcar-gen3.c
index 30eff67..df7b37a 100644
--- a/drivers/pci/pci-rcar-gen3.c
+++ b/drivers/pci/pci-rcar-gen3.c
@@ -22,6 +22,7 @@
 #include <errno.h>
 #include <pci.h>
 #include <wait_bit.h>
+#include <linux/bitops.h>
 
 #define PCIECAR			0x000010
 #define PCIECCTLR		0x000018