ANDROID: staging: ion: Obey kptr_restrict

Some debugging messages did not use %pK, but since those messages are
not very useful and have been removed upstream, just remove them
instead.

Bug: 77937819
Change-Id: Ie45897fe2d6ec3f842a02883e8ec929ed2e76933
Signed-off-by: Alistair Strachan <astrachan@google.com>