display proper error message

- bug : https://bugs.launchpad.net/linaro-powerdebug/+bug/1014667

Signed-off-by: Sanjay Singh Rawat <sanjay.rawat@linaro.org>
diff --git a/powerdebug.c b/powerdebug.c
index 098c5da..6cf3a1b 100644
--- a/powerdebug.c
+++ b/powerdebug.c
@@ -247,7 +247,7 @@
 	}
 
 	if (regulator_init()) {
-		printf("not enough memory to allocate regulators info\n");
+		printf("failed to initialize regulator\n");
 		options->regulators = false;
 	}