soc: x86: apollo_lake: Make it possible to disable I2C support

Make it possible for an application to set CONFIG_I2C=n if it wants.
The unconditional select was making this impossible due to resulting
unmet dependencies.

This is also in line with what some other SoC definitions do with I2C.

Fixes #25204

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>