powerpc/configs/64s: Enable ZSWAP & ZRAM

Most distros enable these. In particular Fedore uses zram in the default
install.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-14-mpe@ellerman.id.au

arch/powerpc/configs/ppc64_defconfig

@@ -78,6 +78,9 @@ CONFIG_MODVERSIONS=y
 CONFIG_MODULE_SRCVERSION_ALL=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_BINFMT_MISC=m
+CONFIG_ZSWAP=y
+CONFIG_Z3FOLD=y
+CONFIG_ZSMALLOC=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
@@ -114,6 +117,7 @@ CONFIG_ELECTRA_CF=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_BLK_DEV_FD=y
+CONFIG_ZRAM=m
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=y