target/riscv: Change "G" expansion
On ISA version
20190608 or later, "G" expands to "IMAFD_Zicsr_Zifencei".
Both "Zicsr" and "Zifencei" are enabled by default and "G" is supposed to
be (virtually) enabled as well, it should be safe to change its expansion.
Signed-off-by: Tsukasa OI <research_trasio@irq.a4lg.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <
d1b5be550a2893a0fd32c928f832d2ff7bfafe35.
1652583332.git.research_trasio@irq.a4lg.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>