Kconfig: update LOGLEVEL range

As LOGLEVEL ranges form 0 to 9 set the limit to 10.

Signed-off-by: Marek Bykowski <marek.bykowski@gmail.com>
diff --git a/common/Kconfig b/common/Kconfig
index a7c5ba2..4bc3df4 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -469,7 +469,7 @@
 config LOGLEVEL
 	int "loglevel"
 	default 4
-	range 0 8
+	range 0 10
 	help
 	  All Messages with a loglevel smaller than the console loglevel will
 	  be compiled in. The loglevels are defined as follows: