Introduce weak default board_init() in rcar-common/common.c , which
allows complete removal of ebisu.c and condor.c at the same time .
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Pull common board initialization code from V3M Eagle board
into rcar-common/v3-common.c so it can be re-used by other
V3M/V3H boards.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>