[PATCH 2/2] RISC-V: Add quotes to #error messages (all)

From: Tsukasa OI <research_trasio@irq.a4lg.com>

In commit 1aaf3a64 ("[PATCH] RISC-V: Deduplicate #error messages in
testsuite"), the author made a mistake to miss the test after adding
quotes around extension names.  To avoid future errors and for consistency
with other #error uses in the RISC-V testsuite, this commit quotes all
unquoted #error messages.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/xtheadba.c: Quote unquoted #error message.
	* gcc.target/riscv/xtheadbb.c: Ditto.
	* gcc.target/riscv/xtheadbs.c: Ditto.
	* gcc.target/riscv/xtheadcmo.c: Ditto.
	* gcc.target/riscv/xtheadcondmov.c: Ditto.
	* gcc.target/riscv/xtheadfmemidx.c: Ditto.
	* gcc.target/riscv/xtheadfmv.c: Ditto.
	* gcc.target/riscv/xtheadint.c: Ditto.
	* gcc.target/riscv/xtheadmac.c: Ditto.
	* gcc.target/riscv/xtheadmemidx.c: Ditto.
	* gcc.target/riscv/xtheadmempair.c: Ditto.
	* gcc.target/riscv/xtheadsync.c: Ditto.
	* gcc.target/riscv/zawrs.c: Ditto.
	* gcc.target/riscv/zvbb.c: Ditto.
	* gcc.target/riscv/zvbc.c: Ditto.
	* gcc.target/riscv/zvkg.c: Ditto.
	* gcc.target/riscv/zvkned.c: Ditto.
	* gcc.target/riscv/zvknha.c: Ditto.
	* gcc.target/riscv/zvknhb.c: Ditto.
	* gcc.target/riscv/zvksed.c: Ditto.
	* gcc.target/riscv/zvksh.c: Ditto.
	* gcc.target/riscv/zvkt.c: Ditto.