add support for sysmoBTS 1003 aka "1002 with GPS and PoE"

There's a minor derivative version of sysmoBTS 1002 which has built-in
GPS and PoE.  We call it 1003 in the EEPROM. Let's treat it identical
to 1002 in the existing code base.

Related: SYS#5327
Change-Id: Ia558587d36a75a1db1951d25b471b3f2e78ef4c9

src/osmo-bts-sysmo/l1_if.c

@@ -1860,7 +1860,8 @@ static void fill_trx_power_params(struct gsm_bts_trx *trx,
 		LOGP(DL1C, LOGL_NOTICE, "Assuming 1002 for sysmoBTS "
 			"Model number %u\n", fl1h->hw_info.model_nr);
 		/* fall-through */
-	case 1002:
+	case 1002:	/* sysmoBTS 1002 */
+	case 1003:	/* sysmoBTS 1002 with GPS and PoE */
 		set_power_param(&trx->power_params, 23, 0);
 	}
 }

src/osmo-bts-sysmo/misc/sysmobts_eeprom.h

@@ -32,6 +32,7 @@ struct sysmobts_eeprom {		/* offset */
 
 enum sysmobts_model_number {
 	MODEL_SYSMOBTS_1002	= 1002,
+	MODEL_SYSMOBTS_1003	= 1003,
 	MODEL_SYSMOBTS_1020	= 1020,
 	MODEL_SYSMOBTS_2050	= 2050,
 };

src/osmo-bts-sysmo/misc/sysmobts_par.c

@@ -341,6 +341,8 @@ char *sysmobts_model(int bts_type, int trx_num)
 		case 0xffff:
 		case 1002:
 			return "sysmoBTS 1002";
+		case 1003:
+			return "sysmoBTS 1002+GPS+PoE";
 		case 2050:
 			switch(trx_num) {
 			case 0: