osfv_cli/src/osfv/models: Fix flashing on MSI PRO B850-P

This platform does not require PSU discharge. Also the flash chip
operates at 1.8V.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>

Author: miczyg1

osfv_cli/src/osfv/models/MSI PRO B850-P WIFI.yml

@@ -1,6 +1,6 @@
 ---
 flash_chip:
-  voltage: "3.3V"
+  voltage: "1.8V"
 
 programmer:
   name: rte_1_1
@@ -9,3 +9,4 @@ pwr_ctrl:
   sonoff: true
   relay: false
   flashing_power_state: "G3"
+  discharge_psu: false