add missing printk loglevel in mm/swapfile.c
add missing printk loglevel in mm/swapfile.c

in mm/swapfile.c a printk() is missing a loglevel. I believe the proper
loglevel for this situation is KERN_ERR, so that's what the patch below
sets -if you agree, please apply.

Signed-off-by: Jesper Juhl <72d6859b6eefdfab3e7d32be3eacef16cb406942@dif.dk>
Signed-off-by: Adrian Bunk <0b86548ef377da0031a3ff3f0c4e06f016e20105@stusta.de>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs