riscv: qemu: imply CONFIG_RNG_RISCV_ZKR

The zkr ISA extension can be used to generate random numbers. Since RVA22
zkr is an optional ISA extension. It can be emulated by QEMU. Our RNG
driver detects if the extension is usable during driver binding. Let's
enable it by default on QEMU.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
1 file changed