Fix the bug on the src0 length with CMASK for RenderTargetDataPayload

The CMASK control to Alpha channel is not src 0 Alpha Present

Author: bcheng0127

visa/VisaToG4/TranslateSend3D.cpp

@@ -1635,7 +1635,7 @@ IR_Builder::constructSrcPayloadRenderTarget(vISA_RT_CONTROLS cntrls,
   uint32_t chMask = (R && !R->isNullReg() ? 0x1 : 0) |
                     ((G && !G->isNullReg() ? 0x1 : 0) << 0x1) |
                     ((B && !B->isNullReg() ? 0x1 : 0) << 0x2) |
-                    (((A && !A->isNullReg() || cntrls.s0aPresent) ? 0x1 : 0) << 0x3);
+                    ((A && !A->isNullReg() ? 0x1 : 0) << 0x3);
 
 
   return std::make_tuple(srcToUse, numRows, chMask);