powerpc/5200: fix oops during going to standby
When going to standby mode mpc code maps the whole soc5200 node to access warious MBAR registers. However as of_iomap uses 'reg' property of device node, only small part of MBAR is getting mapped. Thus pm code gets oops when trying to access high parts of MBAR. As a way to overcome this, make mpc52xx_pm_prepare() explicitly map whole MBAR (0xc0000). Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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