Fix specify extraversion (add . or - if it missed)

install/cl-kernel

@@ -244,6 +244,17 @@ then
 fi
 BOOT_DIR=${DESTINATION%/}/boot
 
+# if specify extraversion add - or . before extraversion if it is missed
+if [[ -n ${KERNEL_EXTRAVERSION} ]] && [[ ${KERNEL_EXTRAVERSION:0:1} != [.-]  ]]
+then
+	if [[ ${KERNEL_EXTRAVERSION:0:1} == [0-9] ]]
+	then
+		KERNEL_EXTRAVERSION=.${KERNEL_EXTRAVERSION} 
+	else
+		KERNEL_EXTRAVERSION=-${KERNEL_EXTRAVERSION} 
+	fi
+fi
+
 parse_kernel_version ${KERNEL_EXTRAVERSION}
 set_kernel_version