staging: unisys: kmalloc/memset to kzalloc conversation

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

This patch is a fixup for

	linux-next: 97a84f12
	"Staging: unisys: Replace kmalloc/memset with kzalloc"

The ALLOC_CMDRSP #define is after transformation to kzalloc only a
rename for kzalloc and was completly removed.

Signed-off-by: Silvio F <silvio.fricke@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>