mfd: cros_ec_i2c: Fix trivial 'tabs before spaces' whitespace issue.

ERROR: code indent should use tabs where possible
+ ^Iec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL);$

WARNING: please, no space before tabs
+ ^Iec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL);$

WARNING: please, no spaces at the start of a line
+ ^Iec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL);$

total: 1 errors, 2 warnings, 366 lines checked
Signed-off-by: Lee Jones <lee.jones@linaro.org>