Rename coreboot_ram stage to ramstage

Rename coreboot_ram stage to ramstage. This is done in order to provide
consistency with other stage names (bootblock, romstage) and to allow any
Makefile rule generalization, required for patches to be submitted later.

Change-Id: Ib66e43b7e17b9c48b2d099670ba7e7d857673386
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: http://review.coreboot.org/5567
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/Kconfig b/src/Kconfig
index e1d2e7ac..6356b19 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -166,7 +166,7 @@
 	    Name                           Offset     Type         Size
 	    cmos_layout.bin                0x0        cmos layout  1159
 	    fallback/romstage              0x4c0      stage        339756
-	    fallback/coreboot_ram          0x53440    stage        186664
+	    fallback/ramstage          0x53440    stage        186664
 	    fallback/payload               0x80dc0    payload      51526
 	    config                         0x8d740    raw          3324
 	    (empty)                        0x8e480    null         3610440