Add pkgconfig flags for phosphor-ipmi-net

Tested: changing pam-authenticate or rmcp-ping results in
        appropriate meson flags getting set in phosphor-ipmi-net

Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
Change-Id: I2341b464d63f43fd31e8879e17e8ed641090ca6a
diff --git a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-net_git.bb b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-net_git.bb
index ecba7cd..ae2e102 100644
--- a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-net_git.bb
+++ b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-net_git.bb
@@ -34,6 +34,10 @@
 inherit meson pkgconfig
 inherit systemd
 
+PACKAGECONFIG ??= "pam-authenticate rmcp-ping"
+PACKAGECONFIG[rmcp-ping] = "-Drmcp_ping=enabled,-Drmcp_ping=disabled"
+PACKAGECONFIG[pam-authenticate] = "-Dpam_authenticate=enabled,-Dpam_authenticate=disabled"
+
 EXTRA_OEMESON = " \
         -Dtests=disabled \
         "