vold2: Don't allow containers < 1mb, and clean up some logging

Signed-off-by: San Mehat <san@google.com>
diff --git a/Loop.cpp b/Loop.cpp
index a54d73e..5e11ee2 100644
--- a/Loop.cpp
+++ b/Loop.cpp
@@ -184,7 +184,7 @@
 int Loop::createImageFile(const char *file, unsigned int numSectors) {
     int fd;
 
-    LOGD("Creating ASEC image file %s (%u sectors)", file, numSectors);
+    LOGD("Creating image file %s (%u sectors)", file, numSectors);
 
     if ((fd = creat(file, 0600)) < 0) {
         LOGE("Error creating imagefile (%s)", strerror(errno));