tpm/tpm_i2c_stm_st33: Split tpm_i2c_tpm_st33 in 2 layers (core + phy)

tpm_i2c_stm_st33 is a TIS 1.2 TPM with a core interface which can be used
by different phy such as i2c or spi. The core part is called st33zp24 which
is also the main part reference.

include/linux/platform_data/tpm_stm_st33.h is renamed consequently.
The driver is also split into an i2c phy in charge of sending/receiving
data as well as managing platform data or dts configuration.

Acked-by: Jarkko Sakkinen <jarkko.sakknen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jason.gunthorpe@obsidianresearch.com>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index 9d4e375..2dc16d3 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -100,16 +100,6 @@
 	  will be accessible from within Linux.  To compile this driver
 	  as a module, choose M here; the module will be called tpm_ibmvtpm.
 
-config TCG_TIS_I2C_ST33
-	tristate "TPM Interface Specification 1.2 Interface (I2C - STMicroelectronics)"
-	depends on I2C
-	depends on GPIOLIB
-	---help---
-	  If you have a TPM security chip from STMicroelectronics working with
-	  an I2C bus say Yes and it will be accessible from within Linux.
-	  To compile this driver as a module, choose M here; the module will be
-	  called tpm_i2c_stm_st33.
-
 config TCG_XEN
 	tristate "XEN TPM Interface"
 	depends on TCG_TPM && XEN
@@ -131,4 +121,5 @@
 	  from within Linux.  To compile this driver as a module, choose
 	  M here; the module will be called tpm_crb.
 
+source "drivers/char/tpm/st33zp24/Kconfig"
 endif # TCG_TPM