Support -pie for aarch64*-elf targets.

ld/
	* emulparams/aarch64elf.sh (GENERATE_PIE_SCRIPT): Set to yes.
	* emulparams/aarch64elf32.sh: Likewise.

(cherry picked from commit 3af09e8db3084f5e03b7f09768a2ab6415418e63)
3 files changed