wlan: Add Dhcp server offload feature

Add support to set the dhcp server offload.
dhcp info such as DHCP enable, server ip address,
number of clients, and start address of dhcp pool
will be sent to firmware.

Change-Id: Id24c355820287d77b0e4200b86b42fe80e6cd4f8
CRs-Fixed: 1091422
diff --git a/Kbuild b/Kbuild
index 06f553b..c2a7ea0 100644
--- a/Kbuild
+++ b/Kbuild
@@ -567,7 +567,8 @@
                 -DWLAN_FEATURE_LINK_LAYER_STATS \
                 -DWLAN_FEATURE_EXTSCAN \
                 -DFEATURE_EXT_LL_STAT \
-                -DWLAN_VOWIFI_DEBUG
+                -DWLAN_VOWIFI_DEBUG \
+		-DDHCP_SERVER_OFFLOAD
 
 ifneq ($(CONFIG_PRONTO_WLAN),)
 CDEFINES += -DWCN_PRONTO