[arm64] Enable MAX77620 and PCA9539 which are required by Jetson TX1

Enable some options used by the Jetson TX1 board.  MAX77620 is used
as system PMIC and PCA9539 as I2C GPIO bus expander.

Set I2C=y since this is required by MFD_MAX77620.

CONFIG_GPIO_MAX77620 and CONFIG_GPIO_MAX77620 are not upstream yet
but will be.  I'm adding the options now to make the commit cover
everything needed.

This is patched on a patch submitted upstream by Laxman Dewangan.

debian/changelog

@@ -15,6 +15,7 @@ linux (4.7~rc2-1~exp1) UNRELEASED; urgency=medium
 
   [ Martin Michlmayr ]
   * [armhf, arm64] Enable PHY_TEGRA_XUSB and USB_XHCI_TEGRA.
+  * [arm64] Enable MAX77620 and PCA9539 which are required by Jetson TX1.
   * [arm64] Enable TEGRA210_ADMA.
   * [arm64] Enable THERMAL.
   * [armhf] Enable TEGRA_SOCTHERM.

debian/config/arm64/config

@@ -87,6 +87,9 @@ CONFIG_EXTCON=m
 ## file: drivers/gpio/Kconfig
 ##
 CONFIG_GPIOLIB=y
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_MAX77620=y
 
 ##
 ## file: drivers/gpu/drm/Kconfig
@@ -122,6 +125,11 @@ CONFIG_TEGRA_HOST1X=m
 ##
 CONFIG_HWSPINLOCK_QCOM=m
 
+##
+## file: drivers/i2c/Kconfig
+##
+CONFIG_I2C=y
+
 ##
 ## file: drivers/i2c/busses/Kconfig
 ##
@@ -158,6 +166,7 @@ CONFIG_TEGRA_MC=y
 ##
 ## file: drivers/mfd/Kconfig
 ##
+CONFIG_MFD_MAX77620=y
 CONFIG_MFD_QCOM_RPM=m
 
 ##
@@ -301,6 +310,7 @@ CONFIG_PHY_TEGRA_XUSB=m
 ##
 ## file: drivers/pinctrl/qcom/Kconfig
 ##
+CONFIG_PINCTRL_MAX77620=y
 CONFIG_PINCTRL_MSM8916=y
 CONFIG_PINCTRL_QCOM_SSBI_PMIC=m
 
@@ -324,6 +334,7 @@ CONFIG_PWM_TEGRA=m
 ## file: drivers/regulator/Kconfig
 ##
 CONFIG_REGULATOR=y
+CONFIG_REGULATOR_MAX77620=m
 CONFIG_REGULATOR_QCOM_RPM=m
 CONFIG_REGULATOR_QCOM_SMD_RPM=m
 
@@ -335,6 +346,7 @@ CONFIG_RESET_CONTROLLER=y
 ##
 ## file: drivers/rtc/Kconfig
 ##
+CONFIG_RTC_DRV_MAX77686=y
 CONFIG_RTC_DRV_EFI=y
 CONFIG_RTC_DRV_PL031=y
 CONFIG_RTC_DRV_TEGRA=y