Hi

This patch is part of a series of patches to add support for ARMv8.1-M 
Mainline instructions to binutils.
This adds infrastructure for the Branch Future instructions (BF, BFX, 
BFL, BFLX, BFCSEL). These are the first instructions in ARM that
have more than one relocations in them. Their external relocations can 
be found in the 'ELF for the Arm Architecture - ABI 2019Q1' document on 
developer.arm.com (see 
https://developer.arm.com/docs/ihi0044/latest/elf-for-the-arm-architecture-abi-2019q1-documentation#aaelf32-table4-9)

This is the second infrastructure patch that adds support to allow up to 
3 relocations in an instruction. This is done by changing the
reloc member of struct arm_it to an array instead (relocs[3]). All the 
previous occurrences of reloc can now to referring to relocs[0].

Testing: Builds successfully and no regressions.

Thanks
Sudi


ChangeLog entries are as follows :

*** gas/ChangeLog ***

2019-04-04  Sudakshina Das  <sudi.das@arm.com>

	* config/tc-arm.c (ARM_IT_MAX_RELOCS): New macro.
	(arm_it): Member reloc renamed relocs and updated to an array.
	Rest: Replace all occurrences of reloc to relocs[0].