tpm: rename vendor data to priv and provide an accessor

  "data" was too generic a name for what's being used as a generic
private pointer by vendor-specific code. Rename it to "priv" and provide
a #define for users.

Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 04b4547..cbee631 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -101,12 +101,14 @@
 	bool timeout_adjusted;
 	unsigned long duration[3]; /* jiffies */
 	bool duration_adjusted;
-	void *data;
+	void *priv;
 
 	wait_queue_head_t read_queue;
 	wait_queue_head_t int_queue;
 };
 
+#define TPM_VPRIV(c)	(c)->vendor.priv
+
 #define TPM_VID_INTEL    0x8086
 
 struct tpm_chip {