[ARM] Bind defined symbol locally in PIE

bfd/
	PR target/20737
	* elf32-arm.c (elf32_arm_final_link_relocate): Bind defined symbol
	locally in PIE.

ld/
	* testsuite/ld-arm/pie-bind-locally-a.s: New test source.
	* testsuite/ld-arm/pie-bind-locally-b.s: Likewise.
	* testsuite/ld-arm/pie-bind-locally.d: New testcase.
	* testsuite/ld-arm/arm-elf.exp: Run new testcase.
7 files changed