gpio: mcp23s08: Select REGMAP/REGMAP_I2C to fix build error
This driver now using devm_regmap_init/devm_regmap_init_i2c, so it needs to select REGMAP/REGMAP_I2C accordingly. Fixes: ("3d84fdb3 gpio: mcp23s08: use regmap") Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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