package/wavemon: add libcap optional dependency

libcap is an optional dependency which is enabled by default since
version 0.7.1 and
https://github.com/uoaerg/wavemon/commit/669c53e3359af5f6d4044126e22ab95f40a968f4
and can be explicitly enabled or disabled since version 0.9.0 and
https://github.com/uoaerg/wavemon/commit/af36fbe75649f745e205cd961302b656b8461e06

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit c3712a86adca8f512b0e7c45c9196732841af10c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/wavemon/wavemon.mk

@@ -13,4 +13,11 @@ WAVEMON_DEPENDENCIES = host-pkgconf libnl ncurses
 # Handwritten Makefile.in, automake isn't used
 WAVEMON_MAKE_OPTS = CC="$(TARGET_CC)"
 
+ifeq ($(BR2_PACKAGE_LIBCAP),y)
+WAVEMON_CONF_OPTS += --with-libcap
+WAVEMON_DEPENDENCIES += libcap
+else
+WAVEMON_CONF_OPTS += --without-libcap
+endif
+
 $(eval $(autotools-package))