Unify the QNN version config (pytorch#13960)

Summary:

Remove a few more hardcoded version

Rollback Plan:

Differential Revision: D81711173

Author: cccclai

.github/workflows/android-perf.yml

@@ -432,7 +432,9 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/build-qnn-sdk.sh
 
         mkdir -p aar-out
-        PYTHON_EXECUTABLE=python ANDROID_ABIS="arm64-v8a" BUILD_AAR_DIR=aar-out EXECUTORCH_BUILD_QNN=ON QNN_SDK_ROOT=/tmp/qnn/2.37.0.25072 EXECUTORCH_ANDROID_PROFILING=ON bash scripts/build_android_library.sh
+        # To find the QNN version
+        source backends/qualcomm/scripts/qnn_config.sh
+        PYTHON_EXECUTABLE=python ANDROID_ABIS="arm64-v8a" BUILD_AAR_DIR=aar-out EXECUTORCH_BUILD_QNN=ON QNN_SDK_ROOT=/tmp/qnn/${QNN_VERSION} EXECUTORCH_ANDROID_PROFILING=ON bash scripts/build_android_library.sh
         mkdir -p extension/benchmark/android/benchmark/app/libs
         cp aar-out/executorch.aar extension/benchmark/android/benchmark/app/libs
         pushd extension/benchmark/android/benchmark

.github/workflows/android-release-artifacts.yml

@@ -104,7 +104,9 @@ jobs:
           source backends/qualcomm/scripts/qnn_config.sh
           export QNN_SDK_ROOT="/tmp/qnn/${QNN_VERSION}"
           export ANDROID_ABIS=arm64-v8a
-          GRADLE_ARGS+=" -DqnnVersion=2.37.0"
+          # To find the QNN version
+          source backends/qualcomm/scripts/qnn_config.sh
+          GRADLE_ARGS+=" -DqnnVersion=${QNN_MAJOR_VERSION}"
         fi
 
         # Build AAR Package

backends/qualcomm/scripts/qnn_config.sh

@@ -6,5 +6,7 @@
 # LICENSE file in the root directory of this source tree.
 
 # QNN SDK Configuration
-QNN_VERSION="2.37.0.250724"
+QNN_MAJOR_VERSION="2.37.0"
+QNN_MINOR_VERSION="250724"
+QNN_VERSION="${QNN_MAJOR_VERSION}.${QNN_MINOR_VERSION}"
 QNN_ZIP_URL="https://softwarecenter.qualcomm.com/api/download/software/sdks/Qualcomm_AI_Runtime_Community/All/${QNN_VERSION}/v${QNN_VERSION}.zip"