drivers: esoc: Add new pon ops for marmot

Add new pon ops for marmot external modem. This is required as the
pon reset sequence time has increased, so add an additional delay
after doing the soft reset.

Change-Id: I52477bccf139ac0e34391c79a145720e7c13f373
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>