ARM: multi_v7_defconfig: ti: Enable networking options for nfs boot

Enable networking options required for NFS boot on TI platforms, which is
widely for automated test systems.
- enable new TI CPSW switch driver and related NET_SWITCHDEV config
- enable TI DP83867 phy
- explicitly enable PTP clock support to ensure dependent networking
drivers will stay built-in.

vmlinux size changes:
- before:
   text       data        bss        dec        hex    filename
14703736    8024602     444976    23173314    16198c2    ./omap-arm/vmlinux

- after:
   text       data        bss        dec        hex    filename
14727271    8029150     444528    23200949    16204b5    ./omap-arm/vmlinux

diff: 27635 (dec)
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20201030124650.20349-1-grygorii.strashko@ti.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -154,6 +154,7 @@ CONFIG_INET6_IPCOMP=m
 CONFIG_IPV6_MIP6=m
 CONFIG_IPV6_TUNNEL=m
 CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_NET_SWITCHDEV=y
 CONFIG_NET_DSA=m
 CONFIG_CAN=y
 CONFIG_CAN_AT91=m
@@ -270,9 +271,12 @@ CONFIG_SNI_AVE=y
 CONFIG_STMMAC_ETH=y
 CONFIG_DWMAC_DWC_QOS_ETH=y
 CONFIG_TI_CPSW=y
+CONFIG_TI_CPSW_SWITCHDEV=y
+CONFIG_TI_CPTS=y
 CONFIG_XILINX_EMACLITE=y
 CONFIG_BROADCOM_PHY=y
 CONFIG_ICPLUS_PHY=y
+CONFIG_DP83867_PHY=y
 CONFIG_MARVELL_PHY=y
 CONFIG_MICREL_PHY=y
 CONFIG_AT803X_PHY=y
@@ -436,6 +440,7 @@ CONFIG_SPI_TEGRA20_SLINK=y
 CONFIG_SPI_XILINX=y
 CONFIG_SPI_SPIDEV=y
 CONFIG_SPMI=y
+CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_AS3722=y
 CONFIG_PINCTRL_RZA2=y
 CONFIG_PINCTRL_STMFX=y