binaryPI: Drop S3_DATA_POS and S3_DATA_SIZE

Direct SPI flash manipulation is forbidden, need to
go through respective FMAP and rdev APIs.

Change-Id: I765a6084fb26398008f38c0403f808bae19fdae1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37192
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/amd/pi/Kconfig

@@ -51,14 +51,6 @@ config DCACHE_RAM_SIZE
 	hex
 	default 0x10000
 
-config S3_DATA_POS
-	hex
-	default 0xFFFF0000
-
-config S3_DATA_SIZE
-	int
-	default 32768
-
 endif # CPU_AMD_PI
 
 source "src/cpu/amd/pi/00630F01/Kconfig"