qcacmn: Fix NDP Response Code policy

The qca_wlan_vendor_ndp_policy for the attribute
QCA_WLAN_VENDOR_ATTR_NDP_RESPONSE_CODE currently specifies type
NLA_U16. However this attribute is defined to be an unsigned 32 bit
value, and nla_get_u32() is used to read the value, so change the
policy to use type NLA_U32 so that nla_parse() can properly verify
that the TLV payload has (at least) 4 bytes of data.

Change-Id: I915a94e7449c2bc1abde64e2a7f5df6a58488ed6
CRs-Fixed: 2237659

os_if/linux/nan/src/os_if_nan.c

@@ -79,8 +79,8 @@ vendor_attr_policy[QCA_WLAN_VENDOR_ATTR_NDP_PARAMS_MAX + 1] = {
 						.len = sizeof(uint32_t)
 	},
 	[QCA_WLAN_VENDOR_ATTR_NDP_RESPONSE_CODE] = {
-						.type = NLA_U16,
-						.len = sizeof(uint16_t)
+						.type = NLA_U32,
+						.len = sizeof(uint32_t)
 	},
 	[QCA_WLAN_VENDOR_ATTR_NDP_NDI_MAC_ADDR] = {
 						.type = NLA_BINARY,