app: overlays: ptl: ll_userspace_overlay: increase memory partitions

Increase the max limit for memory partitions to allow running
SOF with sof-ptl-nocodec.tplg when running all pipelines in user-space.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

app/overlays/ptl/ll_userspace_overlay.conf

@@ -37,3 +37,6 @@ CONFIG_XRUN_NOTIFICATIONS_ENABLE=n
 # enabled and uses the vmh allocation intended for KBP.
 # TODO: needs some better solution to allocate
 CONFIG_SOF_ZEPHYR_SYS_USER_HEAP_SIZE=0x80000
+
+# sof-ptl-nocodec.tplg requires more than 32 partitions for DP
+CONFIG_MAX_DOMAIN_PARTITIONS=64