chore(psci): drop skip_wfi variable

There is now a convent place at the end of the function to jump to when
we shouldn't power down. This eliminates the need for skip_wfi.

Change-Id: I8d1a88c77463e8ee6765b185adbe3d23d9fce101
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
1 file changed