cmake: added rvv intrinsics compilation check

Author: a-sidorova

cmake/platform.cmake

@@ -438,7 +438,10 @@ if (DNNL_TARGET_ARCH STREQUAL "RV64")
     # Check if the RVV Intrinsics can be compiled with the current toolchain and flags
     include(CheckCXXSourceCompiles)
     check_cxx_source_compiles("#include <riscv_vector.h>
-                               int main() { return 0; };"
+                               int main() { 
+                                size_t size = 64;
+                                return vsetvl_e32m2(size); 
+                               };"
                                CAN_COMPILE_RVV_INTRINSICS
     )
     # set CAN_COMPILE_RVV_INTRINSICS to TRUE / FALSE instead of 1 / "" (Undefined)