media: camss: Replace hard coded value with parameter

Kernel test robot reported below warning ->
drivers/media/platform/qcom/camss/camss-csid-gen2.c:407:3:
warning: Value stored to 'val' is never read
[clang-analyzer-deadcode.DeadStores]

Replace hard coded value with val.
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NSouptick Joarder (HPE) <jrdr.linux@gmail.com>
Reviewed-by: NRobert Foss <robert.foss@linaro.org>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/qcom/camss/camss-csid-gen2.c

@@ -405,7 +405,7 @@ static void csid_configure_stream(struct csid_device *csid, u8 enable)
 		writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(0));
 
 		val = 0;
-		writel_relaxed(0, csid->base + CSID_RDI_FRM_DROP_PATTERN(0));
+		writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PATTERN(0));
 
 		val = 1;
 		writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(0));