oscam: Fix buildpaths in generated sources

Fixes
QA Issue: File /usr/src/debug/oscam/1.10+11491-r0/config.c in package oscam-src contains reference to TMPDIR [buildpaths]

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-multimedia/recipes-dvb/oscam/oscam_svn.bb

@@ -17,3 +17,6 @@ inherit cmake
 
 EXTRA_OECMAKE = "-DDEFAULT_CS_CONFDIR=${sysconfdir} -DCMAKE_BUILD_TYPE=Debug"
 
+do_configure:append() {
+    sed -i -e '1 s|${TOPDIR}|<TOPDIR>|g' ${B}/config.c
+}