Prevent an assertion from being triggered when linking an ARM object file with incorrectly set build attributes.

	PR 28848
	PR 28859
	* elf32-arm.c (elf32_arm_merge_eabi_attributes): If the first
	input bfd has a Tag_ABI_HardFP_use set to 3 but does not also have
	TAG_FP_arch set then reset the TAG_ABI_HardFP_use.