[openwrt/openwrt] ipq40xx: 5.15: add testing kernel version

[LEDE Commits]

mans0n pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/17b7756b5a20f6426f06991b92d6527f27ad1a65

commit 17b7756b5a20f6426f06991b92d6527f27ad1a65
Author: Ansuel Smith <ansuelsmth at gmail.com>
AuthorDate: Mon Mar 28 02:55:40 2022 +0200

    ipq40xx: 5.15: add testing kernel version
    
    Add 5.15 kernel as a testing kernel version in the Makefile.
    
    Linksys EA6350v3/EA8300/MR8300 will not build with buildbot settings and
    should be disabled when the target is switched, unless the image size is
    reduced again.
    
    Signed-off-by: Ansuel Smith <ansuelsmth at gmail.com>
    Reviewed-by: Robert Marko <robert.marko at sartura.hr>
    [add comment for increased kernel size]
    Signed-off-by: Sungbo Eo <mans0n at gorani.run>
---
 target/linux/ipq40xx/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/ipq40xx/Makefile b/target/linux/ipq40xx/Makefile
index 9bdb55d783..7df920e2d8 100644
--- a/target/linux/ipq40xx/Makefile
+++ b/target/linux/ipq40xx/Makefile
@@ -9,7 +9,7 @@ CPU_SUBTYPE:=neon-vfpv4
 SUBTARGETS:=generic chromium mikrotik
 
 KERNEL_PATCHVER:=5.10
-KERNEL_TESTING_PATCHVER:=5.10
+KERNEL_TESTING_PATCHVER:=5.15
 
 KERNELNAME:=zImage Image dtbs