checkpatch: add new alloc functions to alloc with multiplies check

kvmalloc() and kvzalloc() functions have now 2-factor multiplication
argument forms kvmalloc_array() and kvcalloc(), correspondingly.

Add alloc-with-multiplies checks for these new functions.

Link: https://github.com/KSPP/linux/issues/187


Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>