mwifiex: use world for unidentified region code

BugLink: https://launchpad.net/bugs/1528910

It's better to use world if region code from EEPROM is
unidentied instead of forcing it to FCC
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
(cherry picked from commit 19b0a710)
Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com>
Reviewed-By: AceLan Kao <acelan.kao@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

drivers/net/wireless/mwifiex/cmdevt.c

@@ -1637,9 +1637,9 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 		if (adapter->region_code == region_code_index[i])
 			break;
 
-	/* If it's unidentified region code, use the default (USA) */
+	/* If it's unidentified region code, use the default (world) */
 	if (i >= MWIFIEX_MAX_REGION_CODE) {
-		adapter->region_code = 0x10;
+		adapter->region_code = 0x00;
 		mwifiex_dbg(adapter, WARN,
 			    "cmd: unknown region code, use default (USA)\n");
 	}