[PATCH] ppc: Fix platform_notify functions marked __init

While adding USB support to an MV64360 based board this week, I
discovered that all MV64x60 boards in the kernel have platform_notify
functions marked with __init. This causes an oops if a device is added
after boot.

The patch below removes the __init markers. I do not have all these
boards to test on, but the change seems very unlikely to break anything
else.

Signed-off-by: Adrian Cox <adrian@humboldt.co.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>