message: Allow field_10x26_arm.s to compile for ARMv7 architecture
  Summary: This is a backport of secp256k1's PR612
  Test Plan: I do not have an arm device where I can test this on.
  Reviewers: #bitcoin_abc, Fabien
  Subscribers: Fabien
diff: @@ -16,15 +16,9 @@ Note:
  */
  .syntax unified
  - .arch armv7-a
  @ eabi attributes - see readelf -A
  - .eabi_attribute 8, 1 @ Tag_ARM_ISA_use = yes
  - .eabi_attribute 9, 0 @ Tag_Thumb_ISA_use = no
  - .eabi_attribute 10, 0 @ Tag_FP_arch = none
  .eabi_attribute 24, 1 @ Tag_ABI_align_needed = 8-byte
  .eabi_attribute 25, 1 @ Tag_ABI_align_preserved = 8-byte, except leaf SP
  - .eabi_attribute 30, 2 @ Tag_ABI_optimization_goals = Aggressive Speed
  - .eabi_attribute 34, 1 @ Tag_CPU_unaligned_access = v6
  .text
  @ Field constants
  