gcc compile warning


After updating edk2 from 201903 to 202011, when using gcc to compile our platform(aarch64) code, we meet a warning
warning: '-x c' after last input file has no effect

We compare the code and find the root cause is that $(ASLCC_FLAGS) was added twice in section of [Acpi-Table-Code-File] in build_rule.template
So I wonder if it's a problem.