* Add Broadcom config files for Arista-7050-QX32 and Arista-7050-Q16S64 SKUs under respective directories
* Remove 'serdes_firmware_mode_xe=0x1' line from Arista 7050 Broadcom config files
* Bump sonic-platform-modules-arista submodule
* Fix sfputil plugin for arista_7060_cx32s
* Fix sfputil plugin for arista_7260cx3_64
* Add front panel port number for arista platforms