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/rtc/rx8010sj.c b/drivers/rtc/rx8010sj.c
index 82c5185..d513561 100644
--- a/drivers/rtc/rx8010sj.c
+++ b/drivers/rtc/rx8010sj.c
@@ -21,6 +21,7 @@
 #include <dm.h>
 #include <i2c.h>
 #include <rtc.h>
+#include <linux/bitops.h>
 
 /*---------------------------------------------------------------------*/
 /* #undef DEBUG_RTC */