package/lvm2: add missing host-pkgconf dependency

configure.ac use PKG_CHECK_MODULES macro to find some libraries dependencies.
So add host-pkgconf in LVM2_DEPENDENCIES.

Fixes:
checking pkg-config is at least version 0.9.0... ./configure: line 9875: [...]/host/bin/pkg-config: No such file or directory

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/lvm2/lvm2.mk

@@ -21,6 +21,8 @@ LVM2_CONF_OPTS += \
 	--enable-dmeventd \
 	--disable-nls
 
+LVM2_DEPENDENCIES += host-pkgconf
+
 # LVM2 uses autoconf, but not automake, and the build system does not
 # take into account the toolchain passed at configure time.
 LVM2_MAKE_ENV = $(TARGET_CONFIGURE_OPTS)