tools: increase polling timeout to 30 minutes

This is needed for 64 MiB BIOS updates.

Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Change-Id: Iff51d3ee80a07555b2a9bdad549c9cf1dde36015
diff --git a/tools/helper.cpp b/tools/helper.cpp
index 01a3c79..7bce39f 100644
--- a/tools/helper.cpp
+++ b/tools/helper.cpp
@@ -38,12 +38,12 @@
 
     try
     {
-        /* sleep for 5 seconds and check 125 times, for a timeout of: 625
-         * seconds.
+        /* sleep for 5 seconds and check 360 times, for a timeout of: 1800
+         * seconds (30 minutes).
          * TODO: make this command line configurable and provide smaller
          * default value.
          */
-        static constexpr int commandAttempts = 125;
+        static constexpr int commandAttempts = 360;
         int attempts = 0;
         bool exitLoop = false;