soc/amd/picasso: Enable FSP compression

This change enables LZMA compression for both FSP-M and FSP-S. This
results in significant savings in the FSP size in each CBFS:

cbfstool firmware/image-trembyle.bin print -r COREBOOT | grep fsp
fspm.bin                       0x9cdc0    fsp            132404 LZMA
(720896 decompressed)
fsps.bin                       0xbdfc0    fsp             86146 LZMA
(327680 decompressed)

LZ4 works too, but the savings are smaller as compared to LZMA:
cbfstool firmware/image-trembyle.bin print -r COREBOOT | grep fsp
fspm.bin                       0x9cdc0    fsp            189530 LZ4
(720896 decompressed)
fsps.bin                       0xcbfc0    fsp            118952 LZ4
(327680 decompressed)

BUG=b:155322763,b:150746858,b:152909132
TEST=Verified that Trembyle boots to OS. No FSP-M or FSP-S errors in
boot logs.

Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ie5e4d58e671e936aa525d3000f890e9e5ae45ec3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41830
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/soc/amd/picasso/Kconfig

@@ -49,6 +49,8 @@ config CPU_SPECIFIC_OPTIONS
 	select SSE2
 	select RTC
 	select PLATFORM_USES_FSP2_0
+	select FSP_COMPRESS_FSP_M_LZMA
+	select FSP_COMPRESS_FSP_S_LZMA
 	select FSP_USES_CB_STACK
 	select UDK_2017_BINDING
 	select CACHE_MRC_SETTINGS