ld: fix relocatable, retain7a target pattens for HPPA

Fix issue reported by Dave and Alan.

Put back the old pattern for hppa-*-linux* and add hppa[12]*-*-linux* to cover
Gentoo's hppa1.1 and hppa2.0 without including hppa64 inadvertently like I did
before.

ld/
	PR 30733
	PR 30734
	* ld/testsuite/ld-elf/relocatable.d: Use better pattern to exclude hppa64
          but include hppa1.1, hppa2.0.
	* ld/testsuite/ld-elf/retain7a.d: Ditto.

Fixes: 0e339f6b
Fixes: e3b66187
Signed-off-by: Sam James <sam@gentoo.org>
(cherry picked from commit 3b23a5ea)