binutils/testsuite: Enable `strip-13' test for `hppa*-*'

binutils/testsuite: Enable `strip-13' test for `hppa*-*'

Based on relocations defined in include/elf/*.h files we have relocation
numbers: 143, 159, 214 and 215 currently not used by any of our ELF
targets.  Use 143 then instead of 241 to enable the `strip-13' test for
`hppa*-*' targets.  It has a side effect with some targets of verifying
that unused relocations whose numbers are below the respective R_*_max
value are handled correctly.

	binutils/
	* testsuite/binutils-all/strip-13.s: Use 143 (0x8f) rather than
	241 (0xf1) for the relocation number and RELA addend.
	* testsuite/binutils-all/strip-13.d: Remove `hppa*-*' from the
	`not-target' list.