RISC-V: Add missing dg-runtest to run the testcase under gcc.target/riscv/rvv/

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/rvv.exp: Add dg-runtest to run the
	testcase under gcc.target/riscv/rvv/.

gcc/testsuite/gcc.target/riscv/rvv/rvv.exp

@@ -35,6 +35,8 @@ dg-init
 
 # Main loop.
 set CFLAGS "$DEFAULT_CFLAGS -O3"
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[cS\]]] \
+	"" $CFLAGS
 dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/base/*.\[cS\]]] \
 	"" $CFLAGS
 dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/xsfvector/*.\[cS\]]] \