linux-lenovo-21bx: upgrade to 6.12

To help with testing: mrtest add 5681. I intend to update this branch when new RCs are out so that it's easy for me/others to test, then merge when 6.12 is released.

device/community/linux-lenovo-21bx/APKBUILD

@@ -57,18 +57,17 @@ package() {
 
 	make modules_install dtbs_install \
 		ARCH="$_carch" \
-		INSTALL_PATH="$pkgdir"/boot/ \
+		INSTALL_PATH="$pkgdir"/boot \
 		INSTALL_MOD_PATH="$pkgdir" \
 		INSTALL_MOD_STRIP=1 \
 		INSTALL_DTBS_PATH="$pkgdir"/boot/dtbs
-
 	rm -f "$pkgdir"/lib/modules/*/build "$pkgdir"/lib/modules/*/source
 
 	install -D "$builddir"/include/config/kernel.release \
-		"$pkgdir"/usr/share/kernel/next-"$_nextver"/kernel.rele
+		"$pkgdir"/usr/share/kernel/$_flavor/kernel.release
 }
 
 sha512sums="
 d8ed7e9d040399cbda4a50ab666f49a90a1c8c8423610d50399eb2e839b82061b631e986335a6b3abfa9957c5f084d98fa4303152d2f09050b81cf4912846be7  linux-lenovo-21bx-6a97bc22fa36010400b91e6d5979741c391112c3.tar.gz
-08db3fce0161c11b58a75c64b637049fe5fc3d8c78e2634c2a684b67f42a9ff357ea2799b88b8e0745e0c62a611ad17efa2b4759264a7e070bc74bb6d64ae9ec  config-lenovo-21bx.aarch64
+08d72f162255927e4a4332840f34faee341dc51fc9f5a777fcfad58147e11df551937b72bfa4c3c6e16e365173addb3058753dcd0e5f1d30b076dad0dbc1f158  config-lenovo-21bx.aarch64
 "