Replace all calls to printk with pr_* functions family.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Tested-By: NSubash Patel <subash.ramaswamy@linaro.org>