hv:ptct: add funtion to parse ptct acpi table

Add function to parse PTCT ACPI Table. For now, we need to parse:
1. Where's the PTCM_Binary
2. The range of pSRAM

Tracked-On: #5330

Signed-off-by: Qian Wang <qian1.wang@intel.com>
Signed-off-by: Li Fei1 <fei1.li@intel.com>
Reviewed-by: Wang, Yu1 <yu1.wang@intel.com>

hypervisor/boot/include/acpi.h

@@ -57,6 +57,7 @@
 #define ACPI_SIG_MCFG            "MCFG" /* Memory Mapped Configuration table */
 #define ACPI_SIG_DSDT            "DSDT" /* Differentiated System Description Table */
 #define ACPI_SIG_TPM2            "TPM2" /* Trusted Platform Module hardware interface table */
+#define ACPI_SIG_PTCT            "PTCT"
 
 struct packed_gas {
 	uint8_t 	space_id;