arm64: defconfig: enable TSN features for ENETC and similiar hardware

Newer network cards and switches support offloading of certain packet
scheduling, classifying and actions onto the hardware itself. For
example, time-aware and credit based schedulers. To use this feature we
have to enable the corresponding modules. Please note, that this will
also enable NET_SCHED and NET_CLS_ACT as builtin because there is no
module option. The enabled modules should get us a good foundation.

$ scripts/bloat-o-meter old-vmlinux vmlinux
add/remove: 446/215 grow/shrink: 48/31 up/down: 78445/-11519 (66926)
[..]
Total: Before=20452567, After=20519493, chg +0.33%

Link: https://lore.kernel.org/r/20200707223114.16355-1-michael@walle.ccSigned-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/configs/defconfig

@@ -161,6 +161,18 @@ CONFIG_NET_DSA=m
 CONFIG_VLAN_8021Q=m
 CONFIG_VLAN_8021Q_GVRP=y
 CONFIG_VLAN_8021Q_MVRP=y
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CBS=m
+CONFIG_NET_SCH_ETF=m
+CONFIG_NET_SCH_TAPRIO=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_FLOWER=m
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_ACT_GACT=m
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_GATE=m
 CONFIG_QRTR=m
 CONFIG_QRTR_SMD=m
 CONFIG_QRTR_TUN=m