[openwrt/openwrt] imx: kernel: add USB storage boot support

[LEDE Commits]

chunkeey pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/6d41da8b7e37db64599643c3ae4998397209322a

commit 6d41da8b7e37db64599643c3ae4998397209322a
Author: Tim Harvey <tharvey at gateworks.com>
AuthorDate: Thu Feb 23 15:24:18 2023 -0800

    imx: kernel: add USB storage boot support
    
    Enable BLK_DEV_SD and USB_STORAGE so that rootfs can be on a USB Mass
    Storage device.
    
    This adds 23KiB to the compressed kernel size
    
    Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 target/linux/imx/config-5.15 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/imx/config-5.15 b/target/linux/imx/config-5.15
index 90b8c285fd..73d0b3fe78 100644
--- a/target/linux/imx/config-5.15
+++ b/target/linux/imx/config-5.15
@@ -41,6 +41,7 @@ CONFIG_ATAGS=y
 CONFIG_AUTO_ZRELADDR=y
 CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
 CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_PM=y
 CONFIG_CACHE_L2X0=y
 CONFIG_CLKSRC_IMX_GPT=y
@@ -420,6 +421,7 @@ CONFIG_USB_MXS_PHY=y
 CONFIG_USB_OTG=y
 CONFIG_USB_PHY=y
 CONFIG_USB_ROLE_SWITCH=y
+CONFIG_USB_STORAGE=y
 CONFIG_USB_SUPPORT=y
 CONFIG_USB_ULPI_BUS=y
 CONFIG_USE_OF=y