internal/rosa/p11: explicitly enable libffi

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/p11.go

@@ -13,6 +13,7 @@ func (t Toolchain) newP11Kit() (pkg.Artifact, string) {
 	), nil, &MesonHelper{
 		Setup: []KV{
 			{"Dsystemd", "disabled"},
+			{"Dlibffi", "enabled"},
 		},
 	},
 		Coreutils,
@@ -30,6 +31,7 @@ func init() {
 		Website:     "https://p11-glue.freedesktop.org/p11-kit.html",
 
 		Dependencies: P{
+			Libffi,
 			Libtasn1,
 		},