kernel: support loop device in v6.8+ kernels

Set CONFIG_BLK_DEV_WRITE_MOUNTED=y to restore previous kernel behaviour.

Kernel v6.8+ will by default block buffer writes to block devices mounted by filesystems.
This unfortunately is what we need to use mounted loop devices needed by some teams
to build OSIs and as an overlay backing store.

More info on this config item [here](https://cateee.net/lkddb/web-lkddb/BLK_DEV_WRITE_MOUNTED.html)

Fixes: #10808

Signed-off-by: Simon Kaegi <simon.kaegi@gmail.com>

tools/packaging/kernel/configs/fragments/common/fs.conf

@@ -9,6 +9,8 @@ CONFIG_BLK_DEV_THROTTLING=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_BSG=y
 CONFIG_BLK_DEV_SD=y
+# Required in v6.8+ to use mounted loop devices
+CONFIG_BLK_DEV_WRITE_MOUNTED=y
 
 # support initial ramdisk
 CONFIG_RD_GZIP=y

tools/packaging/kernel/configs/fragments/whitelist.conf

@@ -38,3 +38,4 @@ CONFIG_PAGE_TABLE_ISOLATION
 CONFIG_MITIGATION_PAGE_TABLE_ISOLATION
 CONFIG_VFIO_AP
 CONFIG_VFIO_MDEV
+CONFIG_BLK_DEV_WRITE_MOUNTED

tools/packaging/kernel/kata_config_version

@@ -1 +1 @@
-146
+147