soc/intel/meteorlake: Add provision to show pre-boot splash screen

This patch adds the ability to show a pre-boot splash screen on
Meteor Lake systems using FSP-S.

The patch calls into `fsp_convert_bmp_to_gop_blt()` when the
`BMP_LOGO` config is enabled. This function converts a BMP
file to a BLT buffer, which is then used by FSP-S to render the splash
screen.

Additionally, increase the heap size (malloc'able size) upto 512KB
(when BMP_LOGO config is enabled) to accommodate high
resolution logo file.

BUG=b:284799726
TEST=Able to see pre-boot splash screen while booting google/rex.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I3608bfacc21574e12cde0e2012a16e6388ce54df
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76922
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>

src/soc/intel/meteorlake/Kconfig

@@ -187,6 +187,7 @@ config IED_REGION_SIZE
 
 config HEAP_SIZE
 	hex
+	default 0x80000 if BMP_LOGO
 	default 0x10000
 
 # Intel recommends reserving the PCIe TBT root port resources as below:

src/soc/intel/meteorlake/fsp_params.c

@@ -10,6 +10,7 @@
 #include <device/pci.h>
 #include <fsp/api.h>
 #include <fsp/fsp_debug_event.h>
+#include <fsp/fsp_gop_blt.h>
 #include <fsp/ppi/mp_service_ppi.h>
 #include <fsp/util.h>
 #include <option.h>
@@ -868,5 +869,10 @@ __weak void mainboard_silicon_init_params(FSP_S_CONFIG *s_cfg)
 /* Handle FSP logo params */
 void soc_load_logo(FSPS_UPD *supd)
 {
-	bmp_load_logo(&supd->FspsConfig.LogoPtr, &supd->FspsConfig.LogoSize);
+	fsp_convert_bmp_to_gop_blt(&supd->FspsConfig.LogoPtr,
+			 &supd->FspsConfig.LogoSize,
+			 &supd->FspsConfig.BltBufferAddress,
+			 &supd->FspsConfig.BltBufferSize,
+			 &supd->FspsConfig.LogoPixelHeight,
+			 &supd->FspsConfig.LogoPixelWidth);
 }