soc/intel/tigerlake: Increase heap size

With SoundWire and USB4 enabled some boards are running out of
memory with all of the ACPI devices and properties.  Increase
the heap size to accommodate.

BUG=b:147462631
TEST=Successfully boot on volteer SKU5 board with SoundWire enabled,
before boot was failing with "Error! memalign: Out of memory"

Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: I0245bdfad93b381871514578e66640e7fe6fa5c4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42211
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index fbf56b4..92bba250 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -97,7 +97,7 @@
 
 config HEAP_SIZE
 	hex
-	default 0x8000
+	default 0x10000
 
 config MAX_ROOT_PORTS
 	int