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/clk/clk_stm32h7.c b/drivers/clk/clk_stm32h7.c
index f147392..5e6abca 100644
--- a/drivers/clk/clk_stm32h7.c
+++ b/drivers/clk/clk_stm32h7.c
@@ -12,6 +12,7 @@
 #include <syscon.h>
 #include <asm/io.h>
 #include <dm/root.h>
+#include <linux/bitops.h>
 
 #include <dt-bindings/clock/stm32h7-clks.h>