tpm: rename chip->dev to chip->pdev

Rename chip->dev to chip->pdev to make it explicit that this not the
character device but actually represents the platform device.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jasob Gunthorpe <jason.gunthorpe@obsidianresearch.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Tested-by: Scot Doyle <lkml14@scotdoyle.com>
Tested-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index af48c56..6ca9b5d 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -356,7 +356,7 @@
 		ACPI_FREE(obj);
 	}
 
-	rc = sysfs_create_group(&chip->dev->kobj, &ppi_attr_grp);
+	rc = sysfs_create_group(&chip->pdev->kobj, &ppi_attr_grp);
 
 	if (!rc)
 		chip->flags |= TPM_CHIP_FLAG_PPI;
@@ -367,5 +367,5 @@
 void tpm_remove_ppi(struct tpm_chip *chip)
 {
 	if (chip->flags & TPM_CHIP_FLAG_PPI)
-		sysfs_remove_group(&chip->dev->kobj, &ppi_attr_grp);
+		sysfs_remove_group(&chip->pdev->kobj, &ppi_attr_grp);
 }