riscv: qemu: Explicitly advertise RVVM support

This patch series enables full RVVM virtual machine support which was
earlier inconveniently provided as out-of-tree patchset.

This should be cleaner than a separate board config, since both
emulators provide similar feature set.
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index fa37102..f4384d1 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -21,7 +21,7 @@
 	bool "Support RISC-V cores on OpenPiton SoC"
 
 config TARGET_QEMU_VIRT
-	bool "Support QEMU Virt Board"
+	bool "Support QEMU Virt & RVVM Boards"
 	select BOARD_LATE_INIT
 
 config TARGET_SIFIVE_UNLEASHED