refactor(rpi3): use renamed event log printer

Following the renaming of printer functions to follow the
event_log_{func} convention, update RPI3 to use the new function names
for consistency with the logging library.

Change-Id: I7a009e78611398f0978e362a7ee5327276286126
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
2 files changed