[openwrt/openwrt] bcm27xx: switch to 5.15

[LEDE Commits]

noltari pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/99ad84b6d9727a63f99a16e0b8386747262e3433

commit 99ad84b6d9727a63f99a16e0b8386747262e3433
Author: Álvaro Fernández Rojas <noltari at gmail.com>
AuthorDate: Tue May 17 15:01:26 2022 +0200

    bcm27xx: switch to 5.15
    
    I tested it locally and I couldn't find any regressions, so let's give this a
    wider test :).
    
    Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 target/linux/bcm27xx/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/bcm27xx/Makefile b/target/linux/bcm27xx/Makefile
index 6680ce9dd1..e408c9040c 100644
--- a/target/linux/bcm27xx/Makefile
+++ b/target/linux/bcm27xx/Makefile
@@ -11,8 +11,7 @@ BOARDNAME:=Broadcom BCM27xx
 FEATURES:=audio boot-part display ext4 fpu gpio rootfs-part rtc squashfs usb usbgadget
 SUBTARGETS:=bcm2708 bcm2709 bcm2710 bcm2711
 
-KERNEL_PATCHVER=5.10
-KERNEL_TESTING_PATCHVER:=5.15
+KERNEL_PATCHVER:=5.15
 
 define Target/Description
 	Build firmware image for Broadcom BCM27xx SoC devices.