Use a more common logging style.

Miscellanea:

o Use pr_warn
o Coalesce formats adding missing spaces
o Argument alignment
o Remove unnecessary OOM messages as k.alloc does stack dumps
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Nishanth Menon <nm@ti.com>
[khilman: update shortlog]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>