arch/x86/smbios: Add Number Of Power Cords field to be overriden

For SMBIOS type 3, add function to override number of power cords

Tested=Exectute dmidecode -t 3 to verify.

Signed-off-by: JingleHsuWiwynn <jingle_hsu@wiwynn.com>
Change-Id: I7dee3a944a49ffcfdc2f4408d92a17aa39761bb0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50015
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/include/smbios.h

@@ -54,6 +54,7 @@ const char *smbios_mainboard_location_in_chassis(void);
 const char *smbios_chassis_version(void);
 const char *smbios_chassis_serial_number(void);
 const char *smbios_processor_serial_number(void);
+u8 smbios_chassis_power_cords(void);
 
 /* This string could be filled late in payload. */
 void smbios_type0_bios_version(uintptr_t address);