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/mmc/bcm2835_sdhost.c b/drivers/mmc/bcm2835_sdhost.c
index 52bb39a..c4876e8 100644
--- a/drivers/mmc/bcm2835_sdhost.c
+++ b/drivers/mmc/bcm2835_sdhost.c
@@ -37,6 +37,7 @@
 #include <asm/arch/mbox.h>
 #include <asm/unaligned.h>
 #include <dm/device_compat.h>
+#include <linux/bitops.h>
 #include <linux/bug.h>
 #include <linux/compat.h>
 #include <linux/delay.h>