add non-yocto items to .gitignore

Add source folders and items downloaded for non-yocto builds to the
gitignore file.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I72d3b682125a201c198cbc3ea50e3f0add281d12
diff --git a/.gitignore b/.gitignore
index e0c197e..fb4aef4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,19 @@
 /build*
 .vscode
+3rdparty/
+CMakeCache.txt
+CMakeFiles/
+CTestTestfile.cmake
+Makefile
+Testing/
+cmake_install.cmake
+compile_commands.json
+googletest-build/
+googletest-src/
+intel-dbus-interfaces-src/
+intel-dbus-interfaces/
+libzinteloemcmds.so*
+phosphor-host-ipmid/
+phosphor-ipmi-host-src/
+prefix/
+runSensorTests