usb/Makefile.am: fix copy-pasted library name: s/libosmosim/libosmousb/

src/usb/Makefile.am:16: warning: variable 'libosmosim_la_LIBADD' is defined but no program or
src/usb/Makefile.am:16: library has 'libosmosim_la' as canonical name (possible typo)
src/usb/Makefile.am:15: warning: variable 'libosmosim_la_LDFLAGS' is defined but no program or
src/usb/Makefile.am:15: library has 'libosmosim_la' as canonical name (possible typo)

Change-Id: I062ea640a75f4521818ba71d5ffea2d08bf3052a
diff --git a/src/usb/Makefile.am b/src/usb/Makefile.am
index bca39bf..2dee434 100644
--- a/src/usb/Makefile.am
+++ b/src/usb/Makefile.am
@@ -12,8 +12,8 @@
 lib_LTLIBRARIES = libosmousb.la
 
 libosmousb_la_SOURCES = osmo_libusb.c
-libosmosim_la_LDFLAGS = -version-info $(LIBVERSION)
-libosmosim_la_LIBADD = \
+libosmousb_la_LDFLAGS = -version-info $(LIBVERSION)
+libosmousb_la_LIBADD = \
 	$(top_builddir)/src/libosmocore.la \
 	$(TALLOC_LIBS) \
 	$(LIBUSB_LIBS)