[openwrt/openwrt] omap: switch default kernel to 5.15

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/71217aa33bb8d1e2f351e0b6145c63a744268a57

commit 71217aa33bb8d1e2f351e0b6145c63a744268a57
Author: Alexey Smirnov <s.alexey at gmail.com>
AuthorDate: Mon Dec 19 13:32:58 2022 +0300

    omap: switch default kernel to 5.15
    
    Switch to kernel 5.15 although it is marked as source only. It is marked
    as source only because the eth0 interface can't be added to the br-lan
    default interface resulting in a broken ethernet [0]. There is a
    workaround to set a higher pvd (e.g. to 4000) in the dts [1].
    
    Other functionality was already tested on a Beaglebone Black for
    +6month now without issues.
    
    Merging this is important to finally branch a new release. We want to
    get rid completely of 5.10 kernel. Without this commit we get following
    error: "Missing kernel version/hash file for 5.10." Hopfully someone
    will fix the board in the rc phase.
    
    - [0] https://github.com/openwrt/openwrt/issues/11953
    - [1] https://github.com/openwrt/openwrt/issues/11953#issuecomment-1419078990
    
    Signed-off-by: Alexey Smirnov <s.alexey at gmail.com>
    [rewrite commit message]
    Signed-off-by: Nick Hainke <vincent at systemli.org>
---
 target/linux/omap/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/omap/Makefile b/target/linux/omap/Makefile
index 6dc1565f06..f995b5eae4 100644
--- a/target/linux/omap/Makefile
+++ b/target/linux/omap/Makefile
@@ -12,8 +12,7 @@ CPU_TYPE:=cortex-a8
 CPU_SUBTYPE:=vfpv3
 SUBTARGETS:=generic
 
-KERNEL_PATCHVER:=5.10
-KERNEL_TESTING_PATCHVER:=5.15
+KERNEL_PATCHVER:=5.15
 
 KERNELNAME:=zImage dtbs