soc/amd/cezanne: Disable Co-op multitasking

There are gremlins in the system. thread_coop_enable has an assert. This
is currently problematic for two reasons.

   assert(current->can_yield <= 0);

When doing smm_do_relocate we are entering a deadlock. The root cause
hasn't been quite found yet, but it's related to co-op multi-threading.

For some reason the assert in thread_coop_enable is firing when
releasing the console_lock spin lock. I'm assuming cpu_info hasn't been
initialized yet. The assert tries to perform a printk, but since the
console_lock is still held we end up in a dead lock. This dead lock will
generally not happen after a warm reset. Again I'm assuming because the
cpu_info struct has some valid values at this point.

For now disable multi-tasking until we fix the cpu_info initialization.

BUG=b:194391185
TEST=Boot guybrush to OS

Co-developed-by: nikolai.vyssotski@amd.corp-partner.google.com
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Ia3143f538a31b5aaaea104aa1d8bcf44e6dcb528
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57005
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Rob Barnes <robbarnes@google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/cezanne/Kconfig

@@ -18,7 +18,6 @@ config SOC_SPECIFIC_OPTIONS
 	select BOOT_DEVICE_SUPPORTS_WRITES if BOOT_DEVICE_SPI_FLASH
 	select DRIVERS_USB_ACPI
 	select DRIVERS_I2C_DESIGNWARE
-	select COOP_MULTITASKING
 	select DRIVERS_USB_PCI_XHCI
 	select FSP_COMPRESS_FSP_M_LZMA
 	select FSP_COMPRESS_FSP_S_LZMA
@@ -31,7 +30,6 @@ config SOC_SPECIFIC_OPTIONS
 	select IDT_IN_EVERY_STAGE
 	select IOAPIC
 	select PARALLEL_MP_AP_WORK
-	select PAYLOAD_PRELOAD
 	select PLATFORM_USES_FSP2_0
 	select PROVIDES_ROM_SHARING
 	select RESET_VECTOR_IN_RAM