Patch from Ben Dooks

This fixes the following with s3c24xx power management:

- debugging needs UARTs enabled, to re-enabled UART clocks,
  save their state over suspend, and add this to the current
  documentation

- update the documentation on pm initialisation

- fix bug reported by Dimitry Andric where __raw_writel()
  has arguments the wrong way around

- fix typo (lower-case letter in S3C2410_GATSTUs2_OFFRESET)
  from Dimitry Andric

- apply Arnaud Patard's patch for pm call types

- move bits of resume code to use printk(KERN_DEBUG) as they
  are potentially before the UART resume, and are not critical
  if the system fails to re-start.

Signed-off-by: Ben Dooks 
Signed-off-by: Russell King