archs38: add 6.1 as testing kernel

Allow selecting 6.1 as testing kernel on archs38.

Signed-off-by: Robert Marko <[email protected]>

target/linux/archs38/Makefile

@@ -12,6 +12,7 @@ FEATURES:=source-only
 SUBTARGETS:=generic
 
 KERNEL_PATCHVER:=5.15
+KERNEL_TESTING_PATCHVER:=6.1
 
 DEVICE_TYPE:=basic