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/dma/bcm6348-iudma.c b/drivers/dma/bcm6348-iudma.c
index 9e0e825..91172d4 100644
--- a/drivers/dma/bcm6348-iudma.c
+++ b/drivers/dma/bcm6348-iudma.c
@@ -26,6 +26,7 @@
 #include <net.h>
 #include <reset.h>
 #include <asm/io.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 
 #define DMA_RX_DESC	6