ARM: rmobile: Clean up GIC macros

Pull out the GIC macros from the board configuration files
into the common Gen3 configuration file since these macros
are the same for all Gen3 systems.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
3 files changed