soc/amd/cezanne,picasso/Kconfig: add help text for MAX_CPUS

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Suggested-by: Nico Huber <nico.h@gmx.de>
Change-Id: I76270b43b3202bda71ff3f6b97d5ffa2234511b7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52646
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig
index 76fa2b2..ccdc7b7 100644
--- a/src/soc/amd/cezanne/Kconfig
+++ b/src/soc/amd/cezanne/Kconfig
@@ -176,6 +176,8 @@
 config MAX_CPUS
 	int
 	default 16
+	help
+	  Maximum number of threads the platform can have.
 
 config CONSOLE_UART_BASE_ADDRESS
 	depends on CONSOLE_SERIAL && AMD_SOC_CONSOLE_UART