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/arch/arm/mach-imx/imxrt/soc.c b/arch/arm/mach-imx/imxrt/soc.c
index 8d5fae9..8e7d151 100644
--- a/arch/arm/mach-imx/imxrt/soc.c
+++ b/arch/arm/mach-imx/imxrt/soc.c
@@ -8,6 +8,7 @@
 #include <init.h>
 #include <asm/io.h>
 #include <asm/armv7_mpu.h>
+#include <linux/bitops.h>
 
 int arch_cpu_init(void)
 {