Names with one leasding underscore considered protected in Python.
_ptable_format is accessed outside of its class.
Made it public by removing underscore.
This pylint warning should be fixed now:
Access to a protected member _ptable_format of a client class
(From OE-Core rev: 72599b5500ebdd0c418a0ef1e2c93c833bd31d75)
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>