sh: Fix up large system memory handling for SH7780 PCI.
sh: Fix up large system memory handling for SH7780 PCI.

For systems that have more than 512MB we need to set up an additional
mapping, this fixes up the rounding to the next power of two and splits
out the mapping accordingly between the two local bus mapping windows.

Signed-off-by: Paul Mundt <38b52dbb5f0b63d149982b6c5de788ec93a89032@linux-sh.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas