[PocketGo2 v2 / RG350P] FBA reloads completely the rom when using "Reset" in option menu during a game

[DrUm78]

Hardware: PocketGo2 v2 / RG350P
O/S: Rogue FW 1.0.9 for PocketGo2 v2 / Rogue FW 1.7.10 for RG350
Software: FinalBurnAlpha_2020-01-29-.44_alias_cmdline_gameconfig_controls_samples.opk

When using "Reset" in option menu during a game, the emulator will reload completely the game, which is not required here, that should simply reset the system without reloading all the rom (quite problematic with large roms like KOF2003 that takes long to load)

Steps to reproduce:

1. Load any rom
2. Press L+R+Start to access FBA option menu
3. Select "Reset"
4. Notice that it reloads entirely the rom files

[goldmojo]

First analysis about current "Reset" implementation:

1. Execute a brand new DrvInit routine
2. This calls these functions DrvExit => BrunDrvExit => (...) + BurnExitMemoryManager
3. As a consequence it frees all machine memory including rom itself

We could try to remove the final BurnExitMemoryManager but it could have a lot of side effects.