mb/starlabs/*: Change the local version to Kconfig

Replace the string with a Kconfig option

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ib11ddd04c44f47b94f4fc9eaed278d554d581b0f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68937
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/mainboard/starlabs/Kconfig

@@ -12,4 +12,8 @@ source "src/mainboard/starlabs/*/Kconfig"
 config MAINBOARD_VENDOR
 	default "Star Labs"
 
+config LOCAL_VERSION
+	string
+	default "8.18"
+
 endif # VENDOR_STARLABS

src/mainboard/starlabs/lite/smbios.c

@@ -11,7 +11,7 @@
 
 const char *smbios_mainboard_bios_version(void)
 {
-	return "8";
+	return CONFIG_LOCAL_VERSION;
 }
 
 /* Get the Embedded Controller firmware version */

src/mainboard/starlabs/starbook/smbios.c

@@ -11,7 +11,7 @@
 
 const char *smbios_mainboard_bios_version(void)
 {
-	return "8";
+	return CONFIG_LOCAL_VERSION;
 }
 
 /* Get the Embedded Controller firmware version */