[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/meta/meta-clang/recipes-bsp/systemd-boot/systemd-boot_%.bbappend b/meta/meta-clang/recipes-bsp/systemd-boot/systemd-boot_%.bbappend
new file mode 100644
index 0000000..d5e4bcc
--- /dev/null
+++ b/meta/meta-clang/recipes-bsp/systemd-boot/systemd-boot_%.bbappend
@@ -0,0 +1,4 @@
+do_configure_append_toolchain-clang() {
+	export EFI_CC="${CC}"
+	sed -i -e "s#O0#O#g" ${S}/src/boot/efi/meson.build
+}