[SCSI] use kmem_cache_zalloc instead of kmem_cache_alloc/memset
[SCSI] use kmem_cache_zalloc instead of kmem_cache_alloc/memset

Signed-off-by: Wei Yongjun <f52b9831d10c067ffbc33238e89e1e27651b0884@cn.fujitsu.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: James Bottomley <407b36959ca09543ccda8f8e06721c791bc53435@HansenPartnership.com>

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