tpm: Export tpm_clear_and_reenable()

This function is intended to be exported but is not. Add it to the header
file.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/tpm-common.h

@@ -209,6 +209,14 @@ int tpm_open(struct udevice *dev);
  */
 int tpm_close(struct udevice *dev);
 
+/**
+ * tpm_clear_and_reenable() - Force clear the TPM and reenable it
+ *
+ * @dev: TPM device
+ * @return 0 on success, -ve on failure
+ */
+u32 tpm_clear_and_reenable(struct udevice *dev);
+
 /**
  * tpm_get_desc() - Get a text description of the TPM
  *