arm64: defconfig: Enable additional Broadcom STB drivers

Enable the following drivers as modular:

- NAND controller with CONFIG_MTD_NAND_BRCMNAND
- AHCI/SATA controller driver with CONFIG_AHCI_BRCM
- Starfighter 2 Ethernet switch driver with CONFIG_NET_DSA_BCM_SF2
- USB drivers (OHCI, EHCI, XHCI) with CONFIG_USB_BRCMSTB
- Watchdog with CONFIG_BCM7038_WDT
- PWM with CONFIG_PWM_BRCMSTB
- SYSTEMPORT Ethernet controller with CONFIG_SYSTEMPORT

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm64/configs/defconfig

@@ -259,6 +259,7 @@ CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_DATAFLASH=y
 CONFIG_MTD_SST25L=y
 CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_NAND_BRCMNAND=m
 CONFIG_MTD_NAND_DENALI_DT=y
 CONFIG_MTD_NAND_MARVELL=y
 CONFIG_MTD_NAND_FSL_IFC=y
@@ -290,6 +291,7 @@ CONFIG_SCSI_UFS_EXYNOS=y
 CONFIG_ATA=y
 CONFIG_SATA_AHCI=y
 CONFIG_SATA_AHCI_PLATFORM=y
+CONFIG_AHCI_BRCM=m
 CONFIG_AHCI_CEVA=y
 CONFIG_AHCI_MVEBU=y
 CONFIG_AHCI_XGENE=y
@@ -309,11 +311,13 @@ CONFIG_MACVTAP=m
 CONFIG_TUN=y
 CONFIG_VETH=m
 CONFIG_VIRTIO_NET=y
+CONFIG_NET_DSA_BCM_SF2=m
 CONFIG_NET_DSA_MSCC_FELIX=m
 CONFIG_AMD_XGBE=y
 CONFIG_NET_XGENE=y
 CONFIG_ATL1C=m
 CONFIG_BCMGENET=m
+CONFIG_SYSTEMPORT=m
 CONFIG_BNX2X=m
 CONFIG_MACB=y
 CONFIG_THUNDER_NIC_PF=y
@@ -365,6 +369,7 @@ CONFIG_REALTEK_PHY=y
 CONFIG_ROCKCHIP_PHY=y
 CONFIG_DP83867_PHY=y
 CONFIG_VITESSE_PHY=y
+CONFIG_USB_BRCMSTB=m
 CONFIG_USB_PEGASUS=m
 CONFIG_USB_RTL8150=m
 CONFIG_USB_RTL8152=m
@@ -593,6 +598,7 @@ CONFIG_ARM_SP805_WATCHDOG=y
 CONFIG_ARM_SBSA_WATCHDOG=y
 CONFIG_ARM_SMC_WATCHDOG=y
 CONFIG_S3C2410_WATCHDOG=y
+CONFIG_BCM7038_WDT=m
 CONFIG_DW_WATCHDOG=y
 CONFIG_SUNXI_WATCHDOG=m
 CONFIG_IMX2_WDT=y
@@ -1112,6 +1118,7 @@ CONFIG_IIO_CROS_EC_BARO=m
 CONFIG_MPL3115=m
 CONFIG_PWM=y
 CONFIG_PWM_BCM2835=m
+CONFIG_PWM_BRCMSTB=m
 CONFIG_PWM_CROS_EC=m
 CONFIG_PWM_IMX27=m
 CONFIG_PWM_MESON=m