ARM: multi_v7_defconfig: Enable BCM47xx/BCM5301x drivers

Add a bunch of required drivers and subsystems:

- BCMA is the on-chip discoverable bus which registers a bunch of
  peripherals
- Enable the BCM47xx watchdog driver to get working system reboot
- Enable the BCM47xx NVRAM/SPROM drivers to be able to fetch MAC
  addresses and other variables needed for system operation
- Make BGMAC (built-in Ethernet adapter) a module
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/configs/multi_v7_defconfig

@@ -173,6 +173,11 @@ CONFIG_CAN_RCAR=m
 CONFIG_CAN_XILINXCAN=y
 CONFIG_CAN_MCP251X=y
 CONFIG_NET_DSA_BCM_SF2=m
+CONFIG_B53=m
+CONFIG_B53_SPI_DRIVER=m
+CONFIG_B53_MDIO_DRIVER=m
+CONFIG_B53_MMAP_DRIVER=m
+CONFIG_B53_SRAB_DRIVER=m
 CONFIG_CAN_SUN4I=y
 CONFIG_BT=m
 CONFIG_BT_MRVL=m
@@ -235,6 +240,7 @@ CONFIG_HIX5HD2_GMAC=y
 CONFIG_SUN4I_EMAC=y
 CONFIG_MACB=y
 CONFIG_BCMGENET=m
+CONFIG_BGMAC_BCMA=y
 CONFIG_SYSTEMPORT=m
 CONFIG_NET_CALXEDA_XGMAC=y
 CONFIG_GIANFAR=y
@@ -467,6 +473,7 @@ CONFIG_MESON_WATCHDOG=y
 CONFIG_DW_WATCHDOG=y
 CONFIG_DIGICOLOR_WATCHDOG=y
 CONFIG_BCM2835_WDT=y
+CONFIG_BCM47XX_WATCHDOG=y
 CONFIG_BCM7038_WDT=m
 CONFIG_BCM_KONA_WDT=y
 CONFIG_MFD_ACT8945A=y
@@ -798,6 +805,10 @@ CONFIG_KEYBOARD_NVEC=y
 CONFIG_SERIO_NVEC_PS2=y
 CONFIG_NVEC_POWER=y
 CONFIG_NVEC_PAZ00=y
+CONFIG_BCMA=y
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_BCMA_DRIVER_GPIO=y
 CONFIG_QCOM_GSBI=y
 CONFIG_QCOM_PM=y
 CONFIG_QCOM_SMEM=y
@@ -876,6 +887,8 @@ CONFIG_BCM2835_MBOX=y
 CONFIG_RASPBERRYPI_FIRMWARE=y
 CONFIG_EFI_VARS=m
 CONFIG_EFI_CAPSULE_LOADER=m
+CONFIG_CONFIG_BCM47XX_NVRAM=y
+CONFIG_BCM47XX_SPROM=y
 CONFIG_EXT4_FS=y
 CONFIG_AUTOFS4_FS=y
 CONFIG_MSDOS_FS=y