Discard .note sections when linking.

These end up being loaded at 0 otherwise and overwrite some coreboot tables.

Built and booted on Stumpy. Saw that the coreboot tables were no longer
overwritten.

Change-Id: Ia9f521d976d0ad544a8205323ae0ddfa8d253d29
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1721
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

payloads/libpayload/lib/libpayload.ldscript

@@ -85,5 +85,8 @@ SECTIONS
 
 	_end = .;
 
-	/DISCARD/ : { *(.comment) }
+	/DISCARD/ : {
+		*(.comment)
+		*(.note*)
+	}
 }