Unbreak `./configure --with-usrp1` build

Change-Id: I49b385594271ae64a48d4d39ee9fe26d7c95bd30
diff --git a/Transceiver52M/Makefile.am b/Transceiver52M/Makefile.am
index 8df2d34..5b5fafa 100644
--- a/Transceiver52M/Makefile.am
+++ b/Transceiver52M/Makefile.am
@@ -91,12 +91,13 @@
 	libtransceiver.la \
 	$(ARCH_LA) \
 	$(GSM_LA) \
-	$(COMMON_LA)
+	$(COMMON_LA) \
+	$(FFTWF_LIBS)
 
 if USRP1
 libtransceiver_la_SOURCES += USRPDevice.cpp
 osmo_trx_LDADD += $(USRP_LIBS)
 else
 libtransceiver_la_SOURCES += UHDDevice.cpp
-osmo_trx_LDADD += $(UHD_LIBS) $(FFTWF_LIBS)
+osmo_trx_LDADD += $(UHD_LIBS)
 endif