[openwrt/openwrt] kernel: Add necessary CONFIG_MTD_SPLIT config option

[LEDE Commits]

linusw pushed a commit to openwrt/openwrt.git, branch openwrt-25.12:
https://git.openwrt.org/980c3ddac856357588b449ccc932bb913db01b3c

commit 980c3ddac856357588b449ccc932bb913db01b3c
Author: Linus Walleij <linusw at kernel.org>
AuthorDate: Tue Feb 3 18:20:44 2026 +0100

    kernel: Add necessary CONFIG_MTD_SPLIT config option
    
    Buils break without this new config, mea culpa.
    
    Link: https://github.com/openwrt/openwrt/pull/21855
    (cherry picked from commit eb0a1a3a8982e25575b7bae214517ce41240bb89)
    Link: https://github.com/openwrt/openwrt/pull/21973
    Signed-off-by: Linus Walleij <linusw at kernel.org>
---
 target/linux/generic/config-6.12 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/linux/generic/config-6.12 b/target/linux/generic/config-6.12
index c63777d609..752015659f 100644
--- a/target/linux/generic/config-6.12
+++ b/target/linux/generic/config-6.12
@@ -3922,6 +3922,7 @@ CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware"
 # CONFIG_MTD_SPLIT_LZMA_FW is not set
 # CONFIG_MTD_SPLIT_MINOR_FW is not set
 # CONFIG_MTD_SPLIT_MSTC_BOOT is not set
+# CONFIG_MTD_SPLIT_OPENWRT_PROLOG is not set
 # CONFIG_MTD_SPLIT_SEAMA_FW is not set
 # CONFIG_MTD_SPLIT_SEIL_FW is not set
 CONFIG_MTD_SPLIT_SQUASHFS_ROOT=y