[RISCV] Support resolving fixup_riscv_call and add to MCFixupKindInfo table

Resolving fixup_riscv_call by assembler when the linker relaxation diabled
and the function and callsite within the same compile unit.

And also adding static_assert after Infos array declaration
to avoid missing any new fixup in MCFixupKindInfo in the future.

Differential Revision: https://reviews.llvm.org/D47126

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333487 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed