mwifiex: remove support for old chipsets W0/W1

For SD8787 A0/A1 chipsets we use the default firmware image
file 'mrvl/sd8787_uapsta.bin'. So the chip rev id variable
is removed.

The global variable fw_name is moved to adapter structure
so that we can support a different interface, such as PCIe,
in future.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index f058225..4f43443 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -35,8 +35,6 @@
 
 static int drv_mode = DRV_MODE_STA;
 
-static char fw_name[32] = DEFAULT_FW_NAME;
-
 /* Supported drv_mode table */
 static struct mwifiex_drv_mode mwifiex_drv_mode_tbl[] = {
 	{
@@ -384,20 +382,8 @@
 
 	memset(&fw, 0, sizeof(struct mwifiex_fw_image));
 
-	switch (adapter->revision_id) {
-	case SD8787_W0:
-	case SD8787_W1:
-		strcpy(fw_name, SD8787_W1_FW_NAME);
-		break;
-	case SD8787_A0:
-	case SD8787_A1:
-		strcpy(fw_name, SD8787_AX_FW_NAME);
-		break;
-	default:
-		break;
-	}
-
-	err = request_firmware(&adapter->firmware, fw_name, adapter->dev);
+	err = request_firmware(&adapter->firmware, adapter->fw_name,
+			       adapter->dev);
 	if (err < 0) {
 		dev_err(adapter->dev, "request_firmware() returned"
 				" error code %#x\n", err);