Increased timeout to 15 mins for 'Is PNOR Flash Done'
Increased timeout to 15 mins for 'Is PNOR Flash Done'

Increased timeout to 15 mins for 'Is PNOR Flash Done' in 'Update PNOR Image'.

Change-Id: I106621d6199153815cd0c1c381f8ed0bbcdef5e4
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation