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

[LEDE Commits]

981213 pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/459d40811e0b83e360c530307cdda1bf252ab381

commit 459d40811e0b83e360c530307cdda1bf252ab381
Author: Nick Hainke <vincent at systemli.org>
AuthorDate: Tue Jan 24 13:01:07 2023 +0100

    zynq: switch default kernel to 5.15
    
    The default kernel should be switched to 5.15 in order to enable testing
    by a broader audience.
    
    Signed-off-by: Nick Hainke <vincent at systemli.org>
---
 target/linux/zynq/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/zynq/Makefile b/target/linux/zynq/Makefile
index b3ad1db8d5..f48b58e598 100644
--- a/target/linux/zynq/Makefile
+++ b/target/linux/zynq/Makefile
@@ -18,8 +18,7 @@ define Target/Description
 	Build firmware image for Zynq 7000 SoC devices.
 endef
 
-KERNEL_PATCHVER:=5.10
-KERNEL_TESTING_PATCHVER:=5.15
+KERNEL_PATCHVER:=5.15
 
 include $(INCLUDE_DIR)/target.mk