mrvl: prestera: Add Marvell Prestera Switchdev firmware 3.0 version

Main changes:

    - add initial L3 support
    - changed a bit the way of events sending
    - changed ABI for some IPC calls
    - add LAG support

This firmware version is ABI un-compatible with the current 2.0,
so add it as separate binary.
Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: Mickey Rachamim <mickeyr@marvell.com>

WHENCE

@@ -5410,6 +5410,7 @@ provided this copyright notice is accompanying it.
 Driver: prestera - Marvell driver for Prestera family ASIC devices
 
 File: mrvl/prestera/mvsw_prestera_fw-v2.0.img
+File: mrvl/prestera/mvsw_prestera_fw-v3.0.img
 
 Licence: Redistributable. See LICENCE.Marvell for details.