Add description about command that read TPM_PERMANENT_FLAGS.

Signed-off-by:Xiaokai Wang <xiaokai.wang@intel.com>

diff --git a/man/man8/tpm_nvinfo.8 b/man/man8/tpm_nvinfo.8
index 0c88af4..43af866 100644
--- a/man/man8/tpm_nvinfo.8
+++ b/man/man8/tpm_nvinfo.8
@@ -136,11 +136,14 @@ tpm_nvinfo
 \&\fBtpm_nvinfo [\s-1OPTIONS\s0]\fR
 .SH "DESCRIPTION"
 .IX Header "DESCRIPTION"
-\&\fBtpm_nvinfo\fR displays information about defined \s-1NVRAM\s0 areas. The user may
-restrict it to display only a single \s-1NVRAM\s0 area by providing an index or may
+\&\fBtpm_nvinfo\fR displays information about defined \s-1NVRAM\s0 areas and \s-1TPM_PERMANENT_FLAGS\s0.
+The user may restrict it to display only a single \s-1NVRAM\s0 area by providing an index or may
 choose ton only list available \s-1NVRAM\s0 areas indices without displaying the
 \&\s-1NVRAM\s0 areas' detailed information.
 .PP
+Owner authentication is necessary if wanting to display  the \s-1TPM_PERMANENT_FLAGS\s0
+The owner password may be provided on the command line using the owner password option.
+.PP
 The following options are supported:
 .IP "\fB\-h, \-\-help\fR" 4
 .IX Item "-h, --help"
@@ -158,6 +161,16 @@ provided all \s-1NVRAM\s0 areas will be displayed.
 .IP "\fB\-n, \-\-list\-only\fR (optional parameter)" 4
 .IX Item "-n, --list-only (optional parameter)"
 Only display the defined \s-1NVRAM\s0 areas' indices.
+.IP "\fB\-f, \-\-flags\fR (optional parameter)" 4
+.IX Item "-f, --flags (optional parameter)"
+Displays \s-1TPM_PERMANENT_FLAGS\s0.
+.IP "\fB\-o, \-\-pwdo\fR (optional parameter)" 4
+.IX Item "-o, --pwdo (optional parameter)"
+The owner password.
+.Sp
+A password may be directly provided for example by using '\-\-pwdo=password' or
+\&'\-opassword'. If no password is provided with this option then the program will
+prompt the user for the password.
 .SH "SEE ALSO"
 .IX Header "SEE ALSO"
 \&\fBtpm_nvdefine\fR(8), \fBtpm_nvread\fR(8), \fBtpm_nvwrite\fR(8), \fBtpm_nvrelease\fR(8)