lmb: fix typo 'commun'

%s/commun/common/

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/Kconfig b/lib/Kconfig
index 70bf8e7..807a4c6 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -793,7 +793,7 @@
 	  Support the library logical memory blocks.
 
 config LMB_USE_MAX_REGIONS
-	bool "Use a commun number of memory and reserved regions in lmb lib"
+	bool "Use a common number of memory and reserved regions in lmb lib"
 	depends on LMB
 	default y
 	help