uboot-phytec

i2c: config: Move SYS_I2C_DW to Kconfig

This patch moves all appearances of CONFIG_SYS_I2C_DW from the config
header to the defconfig files.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Alexey Brodkin <abrodkin@synopsys.com>