soc/amd/picasso: Add Kconfig option for chip footprint

Pollock uses the FT5 footprint, so add the Kconfig option to
allow us to differentiate the chips.

Change-Id: Ia4663d38f1824786f14b6aa000adf27d64e70b5f
Signed-off-by: Martin Roth <martinroth@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/2051509
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Eric Peers <epeers@google.com>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39867
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/amd/picasso/Kconfig

@@ -59,6 +59,16 @@ config HAVE_BOOTBLOCK
 	bool
 	default n
 
+config AMD_FP5
+	def_bool y if !AMD_FT5
+	help
+	  The FP5 package supports higher-wattage parts and dual channel DDR4 memory.
+
+config AMD_FT5
+	def_bool n
+	help
+	  The FT5 package supports low-power parts and single-channel DDR4 memory.
+
 config PRERAM_CBMEM_CONSOLE_SIZE
 	hex
 	default 0x1600