fakeroot: fix build when libcap-dev is installed

Fixes https://bugs.busybox.net/show_bug.cgi?id=8541

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/fakeroot/fakeroot.mk

@@ -10,7 +10,10 @@ FAKEROOT_SITE = http://snapshot.debian.org/archive/debian/20141005T221953Z/pool/
 # Force capabilities detection off
 # For now these are process capabilities (faked) rather than file
 # so they're of no real use
-HOST_FAKEROOT_CONF_ENV = ac_cv_func_capset=no
+HOST_FAKEROOT_CONF_ENV = \
+	ac_cv_header_sys_capability_h=no \
+	ac_cv_func_capset=no
+
 FAKEROOT_LICENSE = GPLv3+
 FAKEROOT_LICENSE_FILES = COPYING