Move object files to $(obj)/<class>/

Instead of tagging object files with .<class>, move them to a <class>
directory below $(obj)/. This way we can keep a 1:1 mapping between
source- and object-file names.

The 1:1 mapping is a prerequisite for Ada, where the compiler refuses
any other object-file name.

Tested by verifying that the resulting coreboot.rom files didn't change
for all of Jenkins' abuild configurations.

Change-Id: Idb7a8abec4ea0a37021d9fc24cc8583c4d3bf67c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/13181
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
diff --git a/src/include/memlayout.h b/src/include/memlayout.h
index 42d5608..e62782a 100644
--- a/src/include/memlayout.h
+++ b/src/include/memlayout.h
@@ -106,7 +106,7 @@
 		SET_COUNTER(bootblock, addr) \
 		_ = ASSERT(_eprogram - _program <= sz, \
 			STR(Bootblock exceeded its allotted size! (sz))); \
-		INCLUDE "lib/program.bootblock.ld"
+		INCLUDE "bootblock/lib/program.ld"
 #else
 	#define BOOTBLOCK(addr, sz) \
 		SET_COUNTER(bootblock, addr) \
@@ -118,7 +118,7 @@
 		SET_COUNTER(romstage, addr) \
 		_ = ASSERT(_eprogram - _program <= sz, \
 			STR(Romstage exceeded its allotted size! (sz))); \
-		INCLUDE "lib/program.romstage.ld"
+		INCLUDE "romstage/lib/program.ld"
 #else
 	#define ROMSTAGE(addr, sz) \
 		SET_COUNTER(romstage, addr) \
@@ -130,7 +130,7 @@
 		SET_COUNTER(ramstage, addr) \
 		_ = ASSERT(_eprogram - _program <= sz, \
 			STR(Ramstage exceeded its allotted size! (sz))); \
-		INCLUDE "lib/program.ramstage.ld"
+		INCLUDE "ramstage/lib/program.ld"
 #else
 	#define RAMSTAGE(addr, sz) \
 		SET_COUNTER(ramstage, addr) \
@@ -149,7 +149,7 @@
 		SET_COUNTER(verstage, addr) \
 		_ = ASSERT(_eprogram - _program <= sz, \
 			STR(Verstage exceeded its allotted size! (sz))); \
-		INCLUDE "lib/program.verstage.ld"
+		INCLUDE "verstage/lib/program.ld"
 
 	#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) VERSTAGE(addr, size)
 #else