misc: Drop print_ implementation from non-romcc boards

Because we had no stack on romcc boards, we had a separate, not as
powerful clone of printk: print_*.

Back in the day, like more than half a decade ago, we migrated a lot
of boards to printk, but we never cleaned up the existing code to be
consistent. Instead, we worked around the problem with a very messy
console.h (nowadays the mess is hidden in romstage_console.c and
early_print.h)

This patch cleans up the generic code pieces to use printk() on all
non-ROMCC boards.

Our two remaining ROMCC boards are fixed up in this commit:
bifferos/bifferboard and dmp/vortex86ex.

Change-Id: I16676eeabe5c892c8e3c9f3c0cd3bae2e8fd74b6
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/8115
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Andrew Wu <arw@dmp.com.tw>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/console/post.c

@@ -150,9 +150,7 @@ void post_code(uint8_t value)
 {
 #if !CONFIG_NO_POST
 #if CONFIG_CONSOLE_POST
-	print_emerg("POST: 0x");
-	print_emerg_hex8(value);
-	print_emerg("\n");
+	printk(BIOS_EMERG, "POST: 0x%02x\n", value);
 #endif
 #if CONFIG_CMOS_POST
 	cmos_post_code(value);