package/tinydtls: needs host-pkgconf

Add host-pkgconf dependency, it is only used to find cunit for tests
which are disabled by default but otherwise autoreconf will fail

Fixes:
 - http://autobuild.buildroot.org/results/721c9feb96f93c60505a12f546a64a86b7eb36aa

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/tinydtls/tinydtls.mk

@@ -9,6 +9,7 @@ TINYDTLS_SITE = $(call github,eclipse,tinydtls,v$(TINYDTLS_VERSION))
 TINYDTLS_LICENSE = EPL-1.0 or EDL-1.0
 TINYDTLS_LICENSE_FILES = LICENSE
 TINYDTLS_INSTALL_STAGING = YES
+TINYDTLS_DEPENDENCIES = host-pkgconf
 # From git
 TINYDTLS_AUTORECONF = YES
 # use inttypes.h data types instead of u_intXX_t for musl compatibility