As we're changing to using devm_* APIs to fix various problems
in this driver, lets also do devm_kzalloc() while we're here too.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NMark A. Greer <mgreer@animalcreek.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>