serial: 8250: 8250_omap: Fix possible array out of bounds access

mainline inclusion
from mainline v5.11-rc1
commit d4548b14
category: bugfix
bugzilla: 176665 https://gitee.com/openeuler/kernel/issues/I4DDEL

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.59&id=d4548b14dd7e5c698f81ce23ce7b69a896373b45

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d4548b14dd7e5c698f81ce23ce7b69a896373b45

--------------------------------

k3_soc_devices array is missing a sentinel entry which may result in out
of bounds access as reported by kernel KASAN.

Fix this by adding a sentinel entry.

Fixes: 439c7183 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable")
Reported-by: NNaresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: NVignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20201111112653.2710-1-vigneshr@ti.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYi Yang <yiyang13@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/tty/serial/8250/8250_omap.c

@@ -1211,6 +1211,7 @@ static int omap8250_no_handle_irq(struct uart_port *port)
 static const struct soc_device_attribute k3_soc_devices[] = {
 	{ .family = "AM65X",  },
 	{ .family = "J721E", .revision = "SR1.0" },
+	{ /* sentinel */ }
 };
 
 static struct omap8250_dma_params am654_dma = {