include arch specific ir on fallback path

Change-Id: Ib04996aae2c21eb73ef2a9f6305915e0caccd704


[ROCm/hip commit: 27d2fc99ca]

projects/hip/bin/hipcc

@@ -153,6 +153,7 @@ if ($HIP_PLATFORM eq "hcc") {
     if ($target_gfx701 eq 0 and $target_gfx801 eq 0 and $target_gfx802 eq 0 and $target_gfx803 eq 0) 
     {
         $HIPLDFLAGS .= " --amdgpu-target=gfx701 --amdgpu-target=gfx801 --amdgpu-target=gfx802 --amdgpu-target=gfx803";
+        $ENV{HIP_HC_IR_GFX803}="$HIP_PATH/lib/hip_hc_gfx803.ll\n";
     }
 
     # Add trace marker library: