Add init port support for 6-pack LC and FC
Add init port support for 6-pack LC and FC

Summary:
WedgePlatform provides the set of ports to be supported by FBOSS. Currently, it
assumes only 64 front panel ports. Add a 'mode' option to support different
favor (wedge, LC, or FC) for wedge_ctrl.

Test Plan:
Running on LC and FC. Also run wedge_ctrl without providing the new option.
Confirm 'wedge' is used as the default.

Reviewed By: jasmeetbagga@fb.com

Subscribers: net-systems@

FB internal diff: D2142926

Signature: t1:2142926:1433960322:951e610de6b637481913d0963627c4842346766f

peterlei/fboss,neuhausler/fboss,raphaelamorim/fboss,peterlei/fboss,neuhausler/fboss,raphaelamorim/fboss,sonoble/fboss,peterlei/fboss,biddyweb/fboss,neuhausler/fboss,biddyweb/fboss,sonoble/fboss,neuhausler/fboss,raphaelamorim/fboss,peterlei/fboss,sonoble/fboss,biddyweb/fboss