drivers/perf: apple_m1: Map generic branch events

Map the generic perf events for branch prediction stats to the
corresponding hardware events.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Tested-by: Janne Grunau <j@jannau.net>
Link: https://lore.kernel.org/r/20241217212048.3709204-4-oliver.upton@linux.dev


Signed-off-by: Will Deacon <will@kernel.org>