ARM: mach-shmobile: sh7372 A4LC support for AP4EVB

The AP4EVB board is also using a sh7372 SoC, so tie in
A4LC support on that board as well.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>