[ARM] Fix type for .init_array.* and .fini_array.* sections

2017-04-20  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (arm_elf_asm_cdtor): Create non-default
    priority .init_array and .fini_array section with SECTION_NOTYPE
    flag.

From-SVN: r247015