ci: add snd-aloop.ko to gki_aarch64_modules

Add sound/drivers/snd-aloop.ko to the common/android/gki_aarch64_modules file to ensure the ALSA loopback module is included in the build.

.github/workflows/build.yml

@@ -454,6 +454,7 @@ jobs:
           echo "CONFIG_SND_DYNAMIC_MINORS=y" >> "$defconfig"
           echo "CONFIG_SND_PROC_FS=y" >> "$defconfig"
           echo "CONFIG_SND_ALOOP=m" >> "$defconfig"
+          echo "sound/drivers/snd-aloop.ko" >> common/android/gki_aarch64_modules
           
           # Build Optimization Configuration
           echo "CONFIG_LTO_CLANG_THIN=y" >> "$defconfig"