scsi: ufs: Add missing UFS_MASK macro definition

Reported-by: NVenkatraman S <svenkatr@ti.com>
Reviewed-by: NVinayak Holikatti <vinholikatti@gmail.com>
Signed-off-by: NSantosh Y <santoshsy@gmail.com>
Signed-off-by: NZhangfei Gao <zhangfei.gao@linaro.org>
Reviewed-by: NSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshci.h

@@ -83,6 +83,8 @@ enum {
 	MASK_UIC_DME_TEST_MODE_SUPPORT		= 0x04000000,
 };
 
+#define UFS_MASK(mask, offset)		((mask) << (offset))
+
 /* UFS Version 08h */
 #define MINOR_VERSION_NUM_MASK		UFS_MASK(0xFFFF, 0)
 #define MAJOR_VERSION_NUM_MASK		UFS_MASK(0xFFFF, 16)