console: Drop driver list in ramstage

This framework was only available in ramstage. So we had to define
console output functions separately for bootblock, romstage and SMM.
Follow-up patches will re-enable all the consoles removed here,
in a more flexible fashion, and with less lines-of-code and copy-paste.

Also the driver list is not in a well-defined order and some of the
loops could exit without visiting all drivers.

NOTE: This build has no console in ramstage.

Change-Id: Iaddc495aaca37e2a6c2c3f802a0dba27bf227a3e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5337
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/lib/rmodule.ld

@@ -35,10 +35,6 @@ SECTIONS
 		/* The driver sections are to allow linking coreboot's
 		 * ramstage with the rmodule linker. Any changes made in
 		 * coreboot_ram.ld should be made here as well. */
-		console_drivers = .;
-		*(.rodata.console_drivers)
-		econsole_drivers = . ;
-		. = ALIGN(4);
 		pci_drivers = . ;
 		*(.rodata.pci_driver)
 		epci_drivers = . ;