boards/risc-v: Enable VPU initialization for QEMU RV

The riscv_vpuconfig() was defined but never called in qemu_rv_start. This caused mstatus.VS to remain disabled, leading to Illegal Instruction exceptions when the OS attempted to use vector registers. This patch adds the missing initialization call.

Signed-off-by: ENJOU1224 <enjou1224@outlook.com>

Author: ENJOU1224

arch/risc-v/src/qemu-rv/qemu_rv_start.c

@@ -166,10 +166,12 @@ void qemu_rv_start(int mhartid, const char *dtb)
     }
 #endif
 
-  /* Configure FPU */
+  /* Configure FPU and VPU */
 
   riscv_fpuconfig();
 
+  riscv_vpuconfig();
+
   if (mhartid > 0)
     {
       goto cpux;