tpm: drop tpm_atmel specific fields from tpm_vendor_specific

Introduced a private struct tpm_atmel_priv that contains the variables
have_region and region_size that were previously located in struct
tpm_vendor_specific. These fields were only used by tpm_atmel.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h
index 6c831f9..3fd929d 100644
--- a/drivers/char/tpm/tpm_atmel.h
+++ b/drivers/char/tpm/tpm_atmel.h
@@ -22,6 +22,11 @@
  *
  */
 
+struct tpm_atmel_priv {
+	int region_size;
+	int have_region;
+};
+
 #ifdef CONFIG_PPC64
 
 #include <asm/prom.h>