platform/x86/amd/pmc: Fix build error with randconfig

on x86_64:

CONFIG_SUSPEND is not set
CONFIG_PM is not set

this leads to build failure of the AMD PMC driver. Add a 'depends on'
in the Kconfig.

Reported-by: Randy Dunlap <[e-mail]>
Closes: https://lore.kernel.org/lkml/[e-mail]/
Signed-off-by: Shyam Sundar S K <[e-mail]>
Tested-by: Randy Dunlap <[e-mail]>
Acked-by: Randy Dunlap <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Hans de Goede <[e-mail]>
Signed-off-by: Hans de Goede <[e-mail]>

drivers/platform/x86/amd/pmc/Kconfig

···
 config AMD_PMC
 	tristate "AMD SoC PMC driver"
 	depends on ACPI && PCI && RTC_CLASS && AMD_NB
+	depends on SUSPEND
 	select SERIO
 	help
 	  The driver provides support for AMD Power Management Controller