[ARM] 3607/1: AT91RM9200 misc fixes

Patch from Andrew Victor

This final patch includes some general fixes.

1. Link in pm.o if CONFIG_PM is enabled.  [Should have been included in
patch 3605/1].
2. Use __raw_readl()/__raw_writel() when accessing System Peripheral
registers.
3. Removed some unnecessary includes

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>