[ipaccess] Start adding a tool that analyzes the ipaccess header

So far I have not much idea about the format. It is starting with
the magic byte and the header is spanning until the next occurence
of the " SDP" marker.
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index de413d5..3f98bda 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -2,7 +2,7 @@
 AM_CFLAGS=-Wall
 
 sbin_PROGRAMS = bsc_hack bs11_config ipaccess-find ipaccess-config \
-                isdnsync bsc_mgcp
+                isdnsync bsc_mgcp ipaccess_firmware
 noinst_LIBRARIES = libbsc.a libmsc.a libvty.a libsccp.a
 noinst_HEADERS = vty/cardshell.h
 
@@ -38,3 +38,5 @@
 
 bsc_mgcp_SOURCES = bsc_mgcp.c msgb.c talloc.c debug.c select.c timer.c telnet_interface.c
 bsc_mgcp_LDADD = libvty.a
+
+ipaccess_firmware_SOURCES = ipaccess-firmware/ipaccess-firmware.c