[SYCL] Fix spirv-to-ir-wrapper test dependencies (#6839)

If you build solely with with make target check-llvm, llvm-spirv won't
be built. However, the tests for spirv-to-ir-wrapper call llvm-spirv, so
we need to capture that dependency.

Signed-off-by: Sarnie, Nick <[email protected]>

Author: sarnex

llvm/test/CMakeLists.txt

@@ -174,6 +174,10 @@ if(TARGET LTO)
   set(LLVM_TEST_DEPENDS ${LLVM_TEST_DEPENDS} LTO)
 endif()
 
+if(TARGET spirv-to-ir-wrapper)
+  set(LLVM_TEST_DEPENDS ${LLVM_TEST_DEPENDS} llvm-spirv)
+endif()
+
 if(LLVM_BUILD_EXAMPLES)
   list(APPEND LLVM_TEST_DEPENDS
     Kaleidoscope-Ch3