Staging: unisys: Replace kmalloc/memset with kzalloc

This patch solves the Coccinelle warning: "kzalloc should be used instead of
kmalloc/memset".

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>

diff --cc drivers/staging/unisys/virthba/virthba.c
Simple merge

diff --cc drivers/staging/unisys/virtpci/virtpci.c
Simple merge

diff --cc drivers/staging/unisys/visorchipset/parser.c
Simple merge

diff --cc drivers/staging/unisys/visorchipset/visorchipset_main.c
Simple merge

diff --cc drivers/staging/unisys/visorutil/memregion_direct.c
Simple merge