man: Document support for IAK and IDevID in swtpm_setup.conf

Document support for IAK and IDevID via iakkeyalgo and idevidkeyalgo
keywords in swtpm_setup.conf.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

man/man5/swtpm_setup.conf.pod

diff --git a/man/man5/swtpm_setup.conf.pod b/man/man5/swtpm_setup.conf.pod
index 96452bc..6b87152 100644
--- a/man/man5/swtpm_setup.conf.pod
+++ b/man/man5/swtpm_setup.conf.pod
@@ -131,7 +131,16 @@
 This keyword is similar to B<ek1keyalgo> but applies to the 2nd endorsement
 key. The same choices are available.
 
-=item B<>
+=item B<iakkeyalgo> (since v0.11)
+
+This keyword allows to choose the default key algorithm of the IAK key.
+Supported values are: ecc_nist_p256 or secp256r1, ecc_nist_p384 or secp384r1,
+ecc_nist_p521 or secp521r1, rsa2048, rsa3072, and rsa4096.
+
+=item B<idevidkeyalgo> (since v0.11)
+
+This keyword allows to choose the default key algorithm of the IDevID key.
+Supported values are the same as for iakkeyalgo.
 
 =back