[binutils-gdb] Aarch64: Float register detection for return values

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 4f4aedebed5397ba285c2abcd13fa0206d8af291 ***

Author: Alan Hayward <alan.hayward@arm.com>
Branch: master
Commit: 4f4aedebed5397ba285c2abcd13fa0206d8af291

Aarch64: Float register detection for return values

Use aapcs_is_vfp_call_or_return_candidate to detect float register
args.

gdb/
	PR gdb/22943:
	* aarch64-tdep.c (is_hfa_or_hva): Remove function.
	(aarch64_extract_return_value): Use
	aapcs_is_vfp_call_or_return_candidate.
	(aarch64_return_in_memory): Likewise.
	(aarch64_store_return_value): Likewise.