[PATCH v2] recordmcount: arm: Implement make_nop

On Mon, Feb 01, 2016 at 04:06:23PM -0800, Stephen Boyd wrote:

In similar spirit to x86 and arm64 support, add a make_nop_arm()
to replace calls to mcount with nops in sections that aren't
traced.

Cc: Russell King <redacted>
Cc: Rabin Vincent <redacted>
Signed-off-by: Stephen Boyd <redacted>
---

Changes from v1:
 * Replace with nops instead of pops
 * Check for BE or LE kernel with elf headers
 * Drop mcount style check because now we look at the previous
   instruction to determine if it's a push (__gnu_mcount_nc) or not (mcount).

Acked-by: Rabin Vincent <redacted>