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/spi/altera_spi.c b/drivers/spi/altera_spi.c
index 11d745f..3aa7a40 100644
--- a/drivers/spi/altera_spi.c
+++ b/drivers/spi/altera_spi.c
@@ -14,6 +14,7 @@
 #include <fdtdec.h>
 #include <spi.h>
 #include <asm/io.h>
+#include <linux/bitops.h>
 
 #define ALTERA_SPI_STATUS_RRDY_MSK	BIT(7)
 #define ALTERA_SPI_CONTROL_SSO_MSK	BIT(10)