Switch ZSWAP_ZPOOL to zsmalloc

The z3fold compressed pages allocator is on it's way
out of the Linux kernel and running this on newer
systems will give you an error:

+ lib/host:configure_zswap:45              :   echo z3fold
z3fold
tee: /sys/module/zswap/parameters/zpool: No such file or directory

So, get ahead of things and move to the much faster
recommended by the kernel developers alternative.

[1]: https://lore.kernel.org/all/20240904233343.933462-1-yosryahmed@google.com/T/#u

Change-Id: I7c137114dd7585d3179a8d5dee818bb379bbcb1f
1 file changed