scsi: ufs: host: ufs-exynos: Make fsd_ufs_drvs static

struct fsd_ufs_drvs is not used outside this file, so make it static.  This
fixes sparse warning:

drivers/ufs/host/ufs-exynos.c:1721:28: sparse: sparse:
symbol 'fsd_ufs_drvs' was not declared. Should it be static?

Link: https://lore.kernel.org/r/20220811161053.54081-1-alim.akhtar@samsung.com
Fixes: 216f74e ("scsi: ufs: host: ufs-exynos: Add support for FSD UFS HCI")
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/ufs/host/ufs-exynos.c

@@ -1711,7 +1711,7 @@ static struct exynos_ufs_uic_attr fsd_uic_attr = {
 	.pa_dbg_option_suite		= 0x2E820183,
 };
 
-struct exynos_ufs_drv_data fsd_ufs_drvs = {
+static const struct exynos_ufs_drv_data fsd_ufs_drvs = {
 	.uic_attr               = &fsd_uic_attr,
 	.quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
 				  UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |