Add and enable u32x4_extend_to_u64x2_high for aarch64 NEON intrinsics.

Add and enable u32x4_extend_to_u64x2_high for aarch64 NEON intrinsics.

This is the high version of extendto. This function accomplishes the
same task as both shuffling and extending done by SSE intrinsics.
This enables the NEON version for buffer indexes to buffer pointer
translation.

Change-Id: I52d7bbf3d76ba69c9acb0e518ff4bc6abf3bbbd4
Signed-off-by: Sirshak Das <sirshak.das@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Yi He <yi.he@arm.com>
Verified-by: Lijian Zhang <lijian.zhang@arm.com>