add libtalloc and its dependency waf-samba.bbclass
This also adds libtalloc-dev to the SDK, which is a first step to
upgrading libosmocore to a 'post external talloc' version.
diff --git a/recipes-osmocom/packagegroup/packagegroup-sdk-osmo.inc b/recipes-osmocom/packagegroup/packagegroup-sdk-osmo.inc
index 29f3ad9..8a52016 100644
--- a/recipes-osmocom/packagegroup/packagegroup-sdk-osmo.inc
+++ b/recipes-osmocom/packagegroup/packagegroup-sdk-osmo.inc
@@ -1,4 +1,5 @@
SDK-OSMO = " \
+ libtalloc-dev \
libosmocore-dev \
libosmo-sccp-staticdev \
libosmo-abis-dev \