[openwrt/openwrt] bmips: switch to linux 5.15

[LEDE Commits]

noltari pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/0ad209709973830ff14cba3dd3c275015c0c548e

commit 0ad209709973830ff14cba3dd3c275015c0c548e
Author: Álvaro Fernández Rojas <noltari at gmail.com>
AuthorDate: Fri May 20 12:36:43 2022 +0200

    bmips: switch to linux 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/bmips/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/bmips/Makefile b/target/linux/bmips/Makefile
index 1fb89b11f3..fa648665d9 100644
--- a/target/linux/bmips/Makefile
+++ b/target/linux/bmips/Makefile
@@ -9,8 +9,7 @@ BOARDNAME:=Broadcom BMIPS
 SUBTARGETS:=generic nand
 FEATURES:=gpio source-only squashfs usb
 
-KERNEL_PATCHVER:=5.10
-KERNEL_TESTING_PATCHVER:=5.15
+KERNEL_PATCHVER:=5.15
 
 define Target/Description
 	Build firmware images for BCM33xx cable modem chips,