i2c: Bugfix in i2c_get_chip_by_phandle()

The "i2cbcdev" sneaked in when implementing this function for the
bootcounter use case. Obviously the intention was to use prop_name
instead.

Fixes: b483552773 (i2c: Implement i2c_get_chip_by_phandle())

Signed-off-by: Philip Oberfichtner <pro@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

drivers/i2c/i2c-uclass.c

@@ -427,7 +427,7 @@ int i2c_get_chip_by_phandle(const struct udevice *parent, const char *prop_name,
 		goto err_exit;
 	}
 
-	ret = dev_read_u32(parent, "i2cbcdev", &phandle);
+	ret = dev_read_u32(parent, prop_name, &phandle);
 	if (ret)
 		goto err_exit;