[binutils-gdb] RISC-V: Add 2 missing privileged registers.

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 645a2c5b46e18013ac9cb16b66ba7b6b97cd01c5 ***

Author: Jim Wilson <jimw@sifive.com>
Branch: master
Commit: 645a2c5b46e18013ac9cb16b66ba7b6b97cd01c5

RISC-V: Add 2 missing privileged registers.

	gas/
	* testsuite/gas/riscv/priv-reg.s: Add missing stval and mtval.
	* testsuite/gas/riscv/priv-reg.d: Likewise.

	include/
	* opcode/riscv-opc.h (CSR_SBADADDR): Rename to CSR_STVAL.  Rename
	DECLARE_CSR entry.  Add alias to map sbadaddr to CSR_STVAL.
	(CSR_MBADADDR): Rename to CSR_MTVAL.  Rename DECLARE_CSR entry.
	Add alias to map mbadaddr to CSR_MTVAL.