makefile: adjust alignment

Adjust alignment of items listed.

Tested: Only ran unit-tests (added new ones).
Change-Id: Iba8a026f6904fade4b13c554dac3b31f23f62b16
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/Makefile.am b/Makefile.am
index 4218de9..b2645ef 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -40,7 +40,14 @@
 endif
 
 noinst_LTLIBRARIES = libsyscmds_common.la
-libsyscmds_common_la_SOURCES = cable.cpp cpld.cpp eth.cpp psu.cpp pcie_i2c.cpp entity_name.cpp handler.cpp
+libsyscmds_common_la_SOURCES = \
+	cable.cpp \
+	cpld.cpp \
+	eth.cpp \
+	psu.cpp \
+	pcie_i2c.cpp \
+	entity_name.cpp \
+	handler.cpp
 libsyscmds_common_la_CXXFLAGS = \
 	$(SDBUSPLUS_CFLAGS) \
 	$(PHOSPHOR_LOGGING_CFLAGS) \