SPM: Rename partition metadata config

Rename partition metadata config from TFM_SP_META_PTR_ENABLE to
CONFIG_TFM_PARTITION_META to align with tfm config pattern.

Signed-off-by: Summer Qin <summer.qin@arm.com>
Change-Id: If269c672029c91c466be8a8bae92aa44a6f3ed9a
28 files changed