[Patch, ARM] PR ld/19368: Add missing relocation type class for R_ARM_IRELATIVE

[Jiong Wang]

We should map R_ARM_IRELATIVE to reloc_class_ifunc so the generic code
will sort it at the last of .rel.dyn.

OK for master and 2.26 branch?

2016-01-05  Richard Sandiford  <richard.sandiford@arm.com>
             Jiong Wang  <jiong.wang@arm.com>

bfd/
   PR ld/19368
   * elf32-arm.c (elf32_arm_reloc_type_class): Map R_ARM_IRELATIVE to
   reloc_class_ifunc.

ld/testsuite/
   PR ld/19368
   * ld-arm/ifunc-3.rd: Update expected result.
   * ld-arm/ifunc-4.rd: Likewise.
   * ld-arm/ifunc-9.rd: Likewise.
   * ld-arm/ifunc-10.rd: Likewise.
   * ld-arm/ifunc-12.rd: Likewise.
   * ld-arm/ifunc-13.rd: Likewise.
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