drivers: modem_cellular: use AT+QGMR to fetch FW version on BG95

Quectel BG9x returns only the base model string to AT+CGMR, while
AT+QGMR provides the true firmware build ID, e.g.

  AT+CGMR  → BG95M3LAR02A03
  AT+QGMR  → BG95M3LAR02A03_01.204.01.204

Replace CGMR with QGMR in the BG95 init script so that
cellular_get_modem_info(... FW_VERSION ...) reports the complete
version string.

Signed-off-by: Van Petrosyan <[email protected]>

Author: petrosyan-van

drivers/modem/modem_cellular.c

@@ -1956,7 +1956,7 @@ MODEM_CHAT_SCRIPT_CMDS_DEFINE(quectel_bg95_init_chat_script_cmds,
 			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGMI", cgmi_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
-			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGMR", cgmr_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+QGMR", cgmr_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CIMI", cimi_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),