Revert "remoteproc: stm32: use correct format strings on 64-bit"

This reverts commit f0b0a4de which is
commit 03bd158e upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I8f629e3f572a8af3ab30cc2bb8c98ac3eadd97e7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>