nuttx: Add new config ARM_HAVE_MVE for MVE instruction

Signed-off-by: lishaoen <lishaoen@xiaomi.com>

arch/arm/Kconfig

@@ -901,6 +901,12 @@ config ARM_HAVE_NEON
 	---help---
 		Decide whether support NEON instruction
 
+config ARM_HAVE_MVE
+	bool
+	default n
+	---help---
+		Decide whether support MVE instruction
+
 config ARM_FPU_ABI_SOFT
 	bool "Soft Float ABI"
 	default n

arch/arm/src/armv8-m/Toolchain.defs

@@ -100,7 +100,11 @@ else ifeq ($(CONFIG_ARCH_CORTEXM35P),y)
   endif
 else ifeq ($(CONFIG_ARCH_CORTEXM55),y)
   TOOLCHAIN_MTUNE    := -mtune=cortex-m55
-  TOOLCHAIN_MARCH    := -march=armv8.1-m.main+dsp
+  ifeq ($(CONFIG_ARM_HAVE_MVE),y)
+    TOOLCHAIN_MARCH  := -march=armv8.1-m.main+mve.fp+fp.dp
+  else
+    TOOLCHAIN_MARCH  := -march=armv8.1-m.main+dsp
+  endif
   ifeq ($(CONFIG_ARCH_FPU),y)
     TOOLCHAIN_MFLOAT := -mfpu=fpv5-d16
   endif