[PATCH] powerpc/head_check: Fix shellcheck errors

[Michael Ellerman]

On Tue, 17 Aug 2021 22:51:54 +1000, Michael Ellerman wrote:
> Replace "cat file | grep pattern" with "grep pattern file", and quote a
> few variables. Together that fixes all shellcheck errors.

Applied to powerpc/next.

[1/1] powerpc/head_check: Fix shellcheck errors
      https://git.kernel.org/powerpc/c/e95ad5f21693a37c0d318b5988c5a0de324eb3e3

cheers