ANDROID: GKI: enable networking; add hidden network configs

Drop the explicit disable of CONFIG_ETHERNET from gki_defconfig so
wired networking support is enabled by default.

Also, when testing GKI with out-of-tree wired networking modules, it
was discovered that a few hidden Kconfigs are required.  Add them here
so out of tree net drivers can be built in a separate tree.

Bug: 179406580
Change-Id: Ia66742e514ae1a3c9f8d0ec1d92eb40b68d12ce7
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
(cherry picked from commit 30f31797fe80307598bc2502bfe2eb19b9bf13fe kernel/common android-mainline)

arch/arm64/configs/gki_defconfig

@@ -272,7 +272,6 @@ CONFIG_DUMMY=y
 CONFIG_WIREGUARD=y
 CONFIG_TUN=y
 CONFIG_VETH=y
-# CONFIG_ETHERNET is not set
 CONFIG_PHYLIB=y
 CONFIG_PPP=y
 CONFIG_PPP_BSDCOMP=y

arch/x86/configs/gki_defconfig

@@ -248,7 +248,6 @@ CONFIG_DUMMY=y
 CONFIG_WIREGUARD=y
 CONFIG_TUN=y
 CONFIG_VETH=y
-# CONFIG_ETHERNET is not set
 CONFIG_PHYLIB=y
 CONFIG_PPP=y
 CONFIG_PPP_BSDCOMP=y

init/Kconfig.gki

@@ -185,6 +185,15 @@ config GKI_HIDDEN_HYPERVISOR_CONFIGS
 	  config, required by various SoC platforms. This is usually
 	  selected by XEN or S390.
 
+config GKI_HIDDEN_NET_CONFIGS
+	bool "Hidden networking configuration needed for GKI"
+	select PAGE_POOL
+	select NET_PTP_CLASSIFY
+	help
+	  Dummy config option used to enable the networking hidden
+	  config, required by various SoC platforms.
+
+
 # Atrocities needed for
 # a) building GKI modules in separate tree, or
 # b) building drivers that are not modularizable
@@ -211,6 +220,7 @@ config GKI_HACKS_TO_FIX
 	select GKI_HIDDEN_GPU_CONFIGS
 	select GKI_HIDDEN_IRQ_CONFIGS
 	select GKI_HIDDEN_HYPERVISOR_CONFIGS
+	select GKI_HIDDEN_NET_CONFIGS
 	help
 	  Dummy config option used to enable core functionality used by
 	  modules that may not be selectable in this config.