tidy tilegx and tilepro MAX_MEM_FOR_RS_ALIGN_CODE

These weren't wrong, but should use the BUNDLE_SIZE macros, in case
they ever change.

	* config/tc-tilegx.h (MAX_MEM_FOR_RS_ALIGN_CODE): Use
	TILEGX_BUNDLE_SIZE_IN_BYTES.
	* config/tc-tilepro.h (MAX_MEM_FOR_RS_ALIGN_CODE): Use
	TILEPRO_BUNDLE_SIZE_IN_BYTES.