console: Add an SoC-specific post-code call

Add a post-code call that SoCs can hook to output or save in any way
that is specific to that SoC.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I0369e4362840d7506d301105d8e1e2fd865919f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68545
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/include/console/console.h

@@ -16,6 +16,7 @@
 void post_code(u8 value);
 void mainboard_post(u8 value);
 void arch_post_code(u8 value);
+void soc_post_code(uint8_t value);
 
 void __noreturn die(const char *fmt, ...);
 #define die_with_post_code(value, fmt, ...) \