ARM: multi_v7_defconfig: enable I2C demultiplexer and slave eeprom

The Renesas Lager board shall be a reference platform for the runtime
I2C IP core switcher and for I2C slave support. Enable the needed
drivers for this.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/multi_v7_defconfig

@@ -322,6 +322,7 @@ CONFIG_I2C_MUX=y
 CONFIG_I2C_ARB_GPIO_CHALLENGE=m
 CONFIG_I2C_MUX_PCA954x=y
 CONFIG_I2C_MUX_PINCTRL=y
+CONFIG_I2C_DEMUX_PINCTRL=y
 CONFIG_I2C_AT91=m
 CONFIG_I2C_BCM2835=y
 CONFIG_I2C_CADENCE=y
@@ -345,6 +346,7 @@ CONFIG_I2C_UNIPHIER_F=y
 CONFIG_I2C_XILINX=y
 CONFIG_I2C_RCAR=y
 CONFIG_I2C_CROS_EC_TUNNEL=m
+CONFIG_I2C_SLAVE_EEPROM=y
 CONFIG_SPI=y
 CONFIG_SPI_ATMEL=m
 CONFIG_SPI_BCM2835=y