drivers/pc80/tpm: Remove LPC_TPM

Replace uses with MAINBOARD_HAS_LPC_TPM, if drivers/pc80/tpm
is present in devicetree.cb it is necessary to always include
the driver in the build.

Change-Id: I9ab921ab70f7b527a52fbf5f775aa063d9a706ce
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41872
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner

src/drivers/pc80/tpm/Kconfig

@@ -1,13 +1,14 @@
-config LPC_TPM
+config MAINBOARD_HAS_LPC_TPM
 	bool
 	default n
 	help
-	  LPC TPM driver is enabled!
+	  Board has LPC TPM support
+
+if MAINBOARD_HAS_LPC_TPM
 
 config TPM_TIS_BASE_ADDRESS
 	hex
 	default 0xfed40000
-	depends on LPC_TPM
 	help
 	  This can be used to adjust the TPM memory base address.
 	  The default is specified by the TCG PC Client Specific TPM
@@ -17,14 +18,8 @@ config TPM_TIS_BASE_ADDRESS
 config TPM_PIRQ
 	hex
 	default 0x0
-	depends on LPC_TPM
 	help
 	  This can be used to specify a PIRQ to use instead of SERIRQ,
 	  which is needed for SPI TPM interrupt support on x86.
 
-config MAINBOARD_HAS_LPC_TPM
-	bool
-	default n
-	select LPC_TPM
-	help
-	  Board has LPC TPM support
+endif

src/drivers/pc80/tpm/Makefile.inc

@@ -1,4 +1,4 @@
-verstage-$(CONFIG_LPC_TPM) += tis.c
-romstage-$(CONFIG_LPC_TPM) += tis.c
-ramstage-$(CONFIG_LPC_TPM) += tis.c
-postcar-$(CONFIG_LPC_TPM) += tis.c
+verstage-$(CONFIG_MAINBOARD_HAS_LPC_TPM) += tis.c
+romstage-$(CONFIG_MAINBOARD_HAS_LPC_TPM) += tis.c
+ramstage-$(CONFIG_MAINBOARD_HAS_LPC_TPM) += tis.c
+postcar-$(CONFIG_MAINBOARD_HAS_LPC_TPM) += tis.c

src/security/tpm/Kconfig

@@ -82,7 +82,7 @@ config DEBUG_TPM
 config TPM_RDRESP_NEED_DELAY
 	bool "Enable Delay Workaround for TPM"
 	default n
-	depends on LPC_TPM
+	depends on MAINBOARD_HAS_LPC_TPM
 	help
 	  Certain TPMs seem to need some delay when reading response
 	  to work around a race-condition-related issue, possibly