Fan control: Add phosphor-fan-control framework

Change-Id: Ie1dc082490997712b4fe3f42d0ddb5049ae5ca06
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/.gitignore b/.gitignore
index 5390726..f3d36e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@
 *.o

 fan_detect_defs.cpp

 phosphor-fan-presence-tach

+phosphor-fan-control