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config: Add driver for mcp23017 I2C GPIO expander

There is already an overlay for the mcp23017 I2C GPIO expander,
but it does nothing without the required driver module.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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pelwell authored and popcornmix committed Jul 14, 2016
1 parent bf258c1 commit 8fd2f7079af1273db382cbfc1bbda4e33763ce58
Showing with 2 additions and 0 deletions.
  1. +1 −0 arch/arm/configs/bcm2709_defconfig
  2. +1 −0 arch/arm/configs/bcmrpi_defconfig
@@ -617,6 +617,7 @@ CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_BCM_VIRT=y
CONFIG_GPIO_ARIZONA=m
CONFIG_GPIO_STMPE=y
CONFIG_GPIO_MCP23S08=m
CONFIG_W1=m
CONFIG_W1_MASTER_DS2490=m
CONFIG_W1_MASTER_DS2482=m
@@ -608,6 +608,7 @@ CONFIG_PPS_CLIENT_GPIO=m
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_ARIZONA=m
CONFIG_GPIO_STMPE=y
CONFIG_GPIO_MCP23S08=m
CONFIG_W1=m
CONFIG_W1_MASTER_DS2490=m
CONFIG_W1_MASTER_DS2482=m

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