[PATCH 2.6.12] ppc32: Patch for changed dev->bus_id format

ppc32: Patch for changed dev->bus_id format + some misc fixups

- Recent changes to drivers/base/platform.c:platform_device_register() changed the format
of dev->bus_id (there is now a '.' between the name & instance (e.g., the old mpsc0 is now mpsc.0)).  This field is used by some platform's platform_notify() routine to identify  the dev entry.  This patch updates the bus_id value compared to include the dot.
- Fix an bad macro name change by a previous patch.
- Some coding style fixups, etc.

Signed-off-by: Mark A. Greer <redacted>
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