meta-openpower: Define i2c-occ feature

OpenPOWER P8 systems uses i2c to access occ.
Define i2c-occ OBMC_MACHINE_FEATURES and append EXTRA_OECONF in
openpower-occ-control.bb so that it compiles with I2C OCC support.

Enabled this feature on Palmetto first.

Change-Id: I1c07d28494fc5e87e86a3be1bfcfd955770e14e7
Signed-off-by: Lei YU <mine260309@gmail.com>
1 file changed