fix build: tests/misc: missing libosmo-abis and -trau flags
fix build: tests/misc: missing libosmo-abis and -trau flags

Add missing LIBOSMOABIS_CFLAGS and LIBOSMOTRAU_CFLAGS.
Pair the _LIBS below the _CFLAGS in LDADD above (cosmetic).

Fixes the stow-enabled jenkins builds are currently failing like below:

In file included from ../../include/osmo-bts/gsm_data.h:136:0,
                 from ../../include/osmo-bts/bts.h:4,
                 from misc_test.c:23:
../../include/osmo-bts/gsm_data_shared.h:21:35: fatal error: osmocom/abis/e1_input.h: No such file or directory
 #include <osmocom/abis/e1_input.h>

Change-Id: I94ea8bad8b410550f72ee6a0408f42f6bd8b6cac

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts