[nss-host] set ip6_tunnel dependency for ppe ipip6 client

Adding dependency for ppe ipip6 clients to skip the
gretap0 tunnel creation for fallback devices.

Change-Id: I1b9cf1016ca57931849f83cd10c4d321c5e2df6c
Signed-off-by: Swati Singh <quic_swasing@quicinc.com>

qca-nss-ppe-tunipip6/Makefile

@@ -28,7 +28,7 @@ define KernelPackage/qca-nss-ppe-tunipip6
   CATEGORY:=Kernel modules
   SUBMENU:=Network Devices
   TITLE:=Kernel driver for PPE tunipip6 tunnel (client)
-  DEPENDS:=@TARGET_ipq95xx||TARGET_ipq53xx +kmod-qca-nss-ppe-tun
+  DEPENDS:=@TARGET_ipq95xx||TARGET_ipq53xx +kmod-qca-nss-ppe-tun +kmod-ip6-tunnel
   FILES:=$(PKG_BUILD_DIR)/clients/tunipip6/qca-nss-ppe-tunipip6.ko
   AUTOLOAD:=$(call AutoLoad,54,qca-nss-ppe-tunipip6)
 endef