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>

src/soc/amd/cezanne/Kconfig

@@ -176,6 +176,8 @@ config MMCONF_BUS_NUMBER
 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

src/soc/amd/picasso/Kconfig

@@ -200,6 +200,8 @@ config VERSTAGE_ADDR
 config MAX_CPUS
 	int
 	default 8
+	help
+	  Maximum number of threads the platform can have.
 
 config VGA_BIOS_ID
 	string