cosmetic: common/Makefile.am: split each source file in one line

Change-Id: I9c4d78fb80446fa4142950d947dad20856573275

src/common/Makefile.am

@@ -7,11 +7,34 @@ AM_CFLAGS += -DENABLE_LC15BTS
 endif
 
 noinst_LIBRARIES = libbts.a libl1sched.a
-libbts_a_SOURCES = gsm_data_shared.c sysinfo.c logging.c abis.c oml.c bts.c \
-		   rsl.c vty.c paging.c measurement.c amr.c lchan.c \
-		   load_indication.c pcu_sock.c handover.c msg_utils.c \
-		   tx_power.c bts_ctrl_commands.c bts_ctrl_lookup.c \
-		   l1sap.c cbch.c power_control.c main.c phy_link.c \
-		   dtx_dl_amr_fsm.c scheduler_mframe.c ta_control.c
+libbts_a_SOURCES = \
+	gsm_data_shared.c \
+	sysinfo.c \
+	logging.c \
+	abis.c \
+	oml.c \
+	bts.c \
+	rsl.c \
+	vty.c \
+	paging.c \
+	measurement.c \
+	amr.c \
+	lchan.c \
+	load_indication.c \
+	pcu_sock.c \
+	handover.c \
+	msg_utils.c \
+	tx_power.c \
+	bts_ctrl_commands.c \
+	bts_ctrl_lookup.c \
+	l1sap.c \
+	cbch.c \
+	power_control.c \
+	main.c \
+	phy_link.c \
+	dtx_dl_amr_fsm.c \
+	scheduler_mframe.c \
+	ta_control.c \
+	$(NULL)
 
 libl1sched_a_SOURCES = scheduler.c