misc: qseecom: fix wipe-key api for PFE key

The qseecom_wipe_key() api allows both FDE and PFE usage,
It is calling  __qseecom_delete_saved_key()  api
that should also allow both.

Change-Id: I2ae583977e7e4958e6dd8a939af74ac62a147895
Signed-off-by: Amir Samuelov <amirs@codeaurora.org>