Merge pull request #1934 from cscd98/scummvm-fix

Fix scummvm build failure

Author: LibretroAdmin

rules.d/core-rules.sh

@@ -913,6 +913,7 @@ include_core_scummvm() {
 libretro_scummvm_name="ScummVM"
 libretro_scummvm_git_url="https://github.com/libretro/scummvm.git"
 libretro_scummvm_build_subdir="backends/platform/libretro"
+libretro_scummvm_build_args="SCUMMVM_PATH=\"${WORKDIR}/libretro-scummvm/\""
 
 include_core_kronos() {
 	register_module core "kronos" -theos_ios -ngc -ps3 -psp1 -qnx -wii