sh: add probe support for new sh7723 cut
This patch adds support for sh7723 silicon with a prr value of 0x51.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
authored by Magnus Damm and committed by Paul Mundt b76baf4c 76013044