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/sound/rockchip_i2s.c b/drivers/sound/rockchip_i2s.c
index 5e8ed6d..4e9e68a 100644
--- a/drivers/sound/rockchip_i2s.c
+++ b/drivers/sound/rockchip_i2s.c
@@ -13,6 +13,7 @@
 #include <log.h>
 #include <sound.h>
 #include <asm/io.h>
+#include <linux/bitops.h>
 
 struct rk_i2s_regs {
 	u32 txcr;		/* I2S_TXCR, 0x00 */