Improve riscv target option compatibility for NuttX (#987)

Improve riscv target option compatibility for NuttX

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
Change-Id: I100793e0f00e7e4929e295c4bb1ef1ec21d83fe9

product-mini/platforms/nuttx/wamr.mk

@@ -17,10 +17,16 @@ else ifeq ($(CONFIG_ARCH_X86_64),y)
 WAMR_BUILD_TARGET := X86_64
 else ifeq ($(CONFIG_ARCH_XTENSA),y)
 WAMR_BUILD_TARGET := XTENSA
+# RV64GC and RV32IM used in older
+# version NuttX
 else ifeq ($(CONFIG_ARCH_RV64GC),y)
 WAMR_BUILD_TARGET := RISCV64
 else ifeq ($(CONFIG_ARCH_RV32IM),y)
 WAMR_BUILD_TARGET := RISCV32
+else ifeq ($(CONFIG_ARCH_RV64),y)
+WAMR_BUILD_TARGET := RISCV64
+else ifeq ($(CONFIG_ARCH_RV32),y)
+WAMR_BUILD_TARGET := RISCV32
 else ifeq ($(CONFIG_ARCH_SIM),y)
 ifeq ($(CONFIG_SIM_M32),y)
 WAMR_BUILD_TARGET := X86_32