Add description about command that read/write locality selection.

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

diff --git a/man/man8/tpm_nvdefine.8 b/man/man8/tpm_nvdefine.8
index 13edb78..eef3561 100644
--- a/man/man8/tpm_nvdefine.8
+++ b/man/man8/tpm_nvdefine.8
@@ -189,6 +189,16 @@ To select the \s-1NVRAM\s0 area with index 0x100, the command line parameter sho
 .IX Item "-s, --size"
 The size of the \s-1NVRAM\s0 area.
 The parameter must either be a decimal number or a hexadecimal number starting with '0x'.
+.IP "\fB\-R, \-\-rlv\fR" 4
+.IX Item "-R, --rlv"
+read locality value:uint8.there are 5 localities:0~4.
+for example,TPM_LOC_ZERO=0x1 TPM_LOC_ONE=0x2 TPM_LOC_TWO=0x4 TPM_LOC_THREE=0x8
+TPM_LOC_FOUR=0x10 TPM_LOC_ALL=0x1f.
+.IP "\fB\-W, \-\-wlv\fR" 4
+.IX Item "-W, --wlv"
+write locality value:uint8.there are 5 localities:0~4.
+for example,TPM_LOC_ZERO=0x1 TPM_LOC_ONE=0x2 TPM_LOC_TWO=0x4 TPM_LOC_THREE=0x8
+TPM_LOC_FOUR=0x10 TPM_LOC_ALL=0x1f.
 .IP "\fB\-p, \-\-permissions\fR" 4
 .IX Item "-p, --permissions"
 The access permissions associated with the \s-1NVRAM\s0 area.