build: install into bin instead of sbin

Installs into bin instead of sbin per guidelines.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I6ce824eb1be11356c0b902f90bdc6e8c2ede950c
diff --git a/Makefile.am b/Makefile.am
index f8b2160..7d161b3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,7 +5,7 @@
 	-DBOOST_ASIO_DISABLE_THREADS \
 	-DBOOST_ALL_NO_LIB
 
-sbin_PROGRAMS = \
+bin_PROGRAMS = \
 	netipmid
 
 netipmid_SOURCES = \