Add INSTALL_MOD_STRIP=1

PKGBUILD

@@ -87,7 +87,8 @@ package() {
 
   msg2 'Install modules'
   # disable DEPMOD because it fail due to poor hack in scripts/depmod.sh
-  make -s INSTALL_MOD_PATH="$pkgdir/usr" DEPMOD=/bin/true modules_install
+  # INSTALL_MOD_STRIP will cause modules to be fully stripped
+  make -s INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 DEPMOD=/bin/true modules_install
 
   msg2 'Install sources'
   install_sources