build: cleanup Makefile

Cleanup spaces from the Makefile.  Automake is ok with spaces, but for a
cleaner file, use tabs.

Change-Id: I800fd11b1b22cbddad3155fdaaff102db3aca9a8
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/Makefile.am b/Makefile.am
index 3cd6fff..69d58a1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,6 +5,6 @@
 libi2ccmds_la_SOURCES = i2c.cpp
 
 libi2ccmds_la_LDFLAGS = \
-                        -version-info 0:0:0 -shared
+	-version-info 0:0:0 -shared
 
 libi2ccmds_la_CXXFLAGS =