We are preparing to add new Loongson (based on LoongArch, not compatible
with old MIPS-based Loongson) support.
HTVEC will be shared by both old
and new Loongson processors, so we adjust its description. HTPIC is only
used by MIPS-based Loongson, so we add a MIPS dependency. PCH_PIC and
PCH_MSI will have some arch-specific code, so we remove the COMPILE_TEST
dependency to avoid build warnings.
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>