Kokoro: fix SWIFTSHADER_LESS_DEBUG_INFO not being set

When the CMake option "LESS_DEBUG_INFO" was remamed to
"SWIFTSHADER_LESS_DEBUG_INFO", we forgot to rename it in the Kokoro
scripts.

Change-Id: I706be61af3a959cf99294491437fb9a968a6164b
Bug: none
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/44268
Reviewed-by: Ben Clayton <bclayton@google.com>
Presubmit-Ready: Antonio Maiorano <amaiorano@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Antonio Maiorano <amaiorano@google.com>
diff --git a/tests/kokoro/gcp_ubuntu/continuous.sh b/tests/kokoro/gcp_ubuntu/continuous.sh
index e4eba18..f721635 100755
--- a/tests/kokoro/gcp_ubuntu/continuous.sh
+++ b/tests/kokoro/gcp_ubuntu/continuous.sh
@@ -27,14 +27,14 @@
 fi
 
 # Lower the amount of debug info, to reduce Kokoro build times.
-LESS_DEBUG_INFO=1
+SWIFTSHADER_LESS_DEBUG_INFO=1
 
 cmake .. \
     "-DCMAKE_BUILD_TYPE=${BUILD_TYPE}" \
     "-DREACTOR_BACKEND=${REACTOR_BACKEND}" \
     "-DSWIFTSHADER_LLVM_VERSION=${LLVM_VERSION}" \
     "-DREACTOR_VERIFY_LLVM_IR=1" \
-    "-DLESS_DEBUG_INFO=${LESS_DEBUG_INFO}"
+    "-DSWIFTSHADER_LESS_DEBUG_INFO=${SWIFTSHADER_LESS_DEBUG_INFO}"
 cmake --build . -- -j $(nproc)
 
 # Run unit tests
diff --git a/tests/kokoro/macos/continuous.sh b/tests/kokoro/macos/continuous.sh
index 7778b06..8034012 100755
--- a/tests/kokoro/macos/continuous.sh
+++ b/tests/kokoro/macos/continuous.sh
@@ -21,7 +21,7 @@
 fi
 
 # Lower the amount of debug info, to reduce Kokoro build times.
-LESS_DEBUG_INFO=1
+SWIFTSHADER_LESS_DEBUG_INFO=1
 
 # Disable ASAN checks for debug builds, to reduce Kokoro build times.
 # ASAN builds are recommended to be optimized.
@@ -36,7 +36,7 @@
     "-DREACTOR_BACKEND=${REACTOR_BACKEND}" \
     "-DSWIFTSHADER_LLVM_VERSION=${LLVM_VERSION}" \
     "-DREACTOR_VERIFY_LLVM_IR=1" \
-    "-DLESS_DEBUG_INFO=${LESS_DEBUG_INFO}"
+    "-DSWIFTSHADER_LESS_DEBUG_INFO=${SWIFTSHADER_LESS_DEBUG_INFO}"
 cmake --build . -- -j$(sysctl -n hw.logicalcpu)
 
 # Run unit tests