[openwrt/openwrt] rockchip: switch to 5.15 kernel

[LEDE Commits]

blocktrron pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/2b4f12e55bc5a492e86a29a0f46ce8dd1f9f3bdb

commit 2b4f12e55bc5a492e86a29a0f46ce8dd1f9f3bdb
Author: Tomas Lara <tl849670 at gmail.com>
AuthorDate: Sat Jun 25 22:28:42 2022 -0400

    rockchip: switch to 5.15 kernel
    
    Run tested: NanoPI R4S
    
    Signed-off-by: Tomas Lara <tl849670 at gmail.com>
---
 target/linux/rockchip/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/rockchip/Makefile b/target/linux/rockchip/Makefile
index 1fbd4983da..7b04bfdb21 100644
--- a/target/linux/rockchip/Makefile
+++ b/target/linux/rockchip/Makefile
@@ -7,8 +7,7 @@ BOARDNAME:=Rockchip
 FEATURES:=ext4 audio usb usbgadget display gpio fpu pci pcie rootfs-part boot-part squashfs
 SUBTARGETS:=armv8
 
-KERNEL_PATCHVER:=5.10
-KERNEL_TESTING_PATCHVER:=5.15
+KERNEL_PATCHVER:=5.15
 
 define Target/Description
 	Build firmware image for Rockchip SoC devices.