payloads: Only show supported payloads in menuconfig

Some payloads don't depend on their supported platforms, which makes
them visible in menuconfig even if they are not supported (yet).

Change-Id: Ia1ec0f0ca0b6521d0c024500c67326337f3d744f
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/28774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

payloads/Kconfig

@@ -30,6 +30,7 @@ config PAYLOAD_ELF
 
 config PAYLOAD_FIT
 	bool "A FIT payload"
+	depends on ARCH_ARM64
 	select PAYLOAD_FIT_SUPPORT
 	help
 	  Select this option if you have a payload image (a FIT file) which
@@ -41,6 +42,7 @@ config PAYLOAD_FIT
 
 config PAYLOAD_BAYOU
 	bool "Bayou"
+	depends on ARCH_X86
 	help
 	  Select this option if you want to set bayou as your primary
 	  payload.

payloads/external/FILO/Kconfig.name

@@ -1,5 +1,6 @@
 config PAYLOAD_FILO
 	bool "FILO"
+	depends on ARCH_X86
 	help
 	  Select this option if you want to build a coreboot image
 	  with a FILO payload. If you don't know what this is

payloads/external/linux/Kconfig.name

@@ -1,5 +1,6 @@
 config PAYLOAD_LINUX
 	bool "A Linux payload"
+	depends on ARCH_X86 || ARCH_ARM
 	help
 	  Select this option if you have a Linux bzImage which coreboot
 	  should run as soon as the basic hardware initialization

payloads/external/tianocore/Kconfig.name

@@ -1,5 +1,6 @@
 config PAYLOAD_TIANOCORE
 	bool "Tianocore coreboot payload package"
+	depends on ARCH_X86
 	help
 	  Select this option if you want to build a coreboot image
 	  with a Tianocore payload. If you don't know what this is