Revert "soc/intel/cannonlake: Add postcar stage support"

This reverts commit 399c022a8c.

This was merged too early.  I'll repost it.

Change-Id: Iabac0aaa0a16404c885875137cf34bf64bf956f7
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20686
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/cannonlake/uart.c

@@ -13,8 +13,6 @@
  * GNU General Public License for more details.
  */
 
-#define __SIMPLE_DEVICE__
-
 #include <assert.h>
 #include <console/uart.h>
 #include <device/pci_def.h>
@@ -62,10 +60,8 @@ void pch_uart_init(void)
 	gpio_configure_pads(p->pads, ARRAY_SIZE(p->pads));
 }
 
-#if IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM)
 uintptr_t uart_platform_base(int idx)
 {
 	/* We can only have one serial console at a time */
 	return UART_DEBUG_BASE_ADDRESS;
 }
-#endif