cmd/vendor: revert vendored code mistakenly modified in CL 398734

cmd/vendor: revert vendored code mistakenly modified in CL 398734

CL 398734 mistakenly modified
cmd/vendor/golang.org/x/arch/ppc64/ppc64asm/tables.go, which causes
the cmd/internal/moddeps to (correctly) fail due to modified vendored
code. This reverts the edit by re-running 'go mod vendor'.

Fixes #52231.

Change-Id: I1def3efe5d408464561e775feb0f9d34ff5fd0b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/399154
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>