owl-loader: fix crash caused by endian patch

This patch fixes a crash that occured on the
BT Home Hub v5a (lantiq/xrx200) which resulted
in the device bootlooping.

Reported-by: Ryan Mounce <ryan@mounce.com.au>
Tested-by: Vitalij Alshevsky <v_alshevsky@tut.by>
Fixes: ddece08bf4 ("kernel: owl-loader: fix sparse endian warnings")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

target/linux/generic/files/drivers/misc/owl-loader.c

@@ -75,7 +75,7 @@ static int ath9k_pci_fixup(struct pci_dev *pdev, const u16 *cal_data,
 
 	/* set pointer to first reg address */
 	for (data = (const void *) (cal_data + 3);
-	     (const void *) data <= cal_end && data->reg != ~0;
+	     (const void *) data <= cal_end && data->reg != (u16)~0;
 	     data++) {
 		u32 val;
 		u16 reg;