power: qpnp-fg-gen3: Whitelist the values in profile integrity word

While checking the profile integrity word to determine whether a
profile load is required or not, whitelist the values so that
profile loading cannot be skipped because of a garbage value
present.

Change-Id: Iff1d116541d07dbb39de966d98fa69b76aeab93d
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>