staging: zram: remove xvmalloc

Removes the xvmalloc allocator code from the zram driver

Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/Makefile
Simple merge

diff --cc drivers/staging/zram/xvmalloc.c
Simple merge

diff --cc drivers/staging/zram/xvmalloc.h
Simple merge

diff --cc drivers/staging/zram/xvmalloc_int.h
Simple merge