package/qemu: add support for RISC-V

QEMU is supported on both 32-bit and 64-bit RISC-V hosts, so let's
enable support for it in buildroot.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qemu/Config.in

@@ -8,6 +8,7 @@ config BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
 	default y if BR2_mipsel
 	default y if BR2_powerpc64
 	default y if BR2_powerpc64le
+	default y if BR2_riscv
 	default y if BR2_x86_64
 
 comment "QEMU requires a toolchain with wchar, threads, gcc >= 8"