src: Remove unused '#include <cpu/x86/lapic.h>'

Also, replace 'lapic.h' by 'lapic_def.h' in 'soc/intel/braswell/northcluster.c'.

Change-Id: I71cff43d53660dc1e5a760ac3034bcf75f93c6e7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41489
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/xeon_sp/uncore.c b/src/soc/intel/xeon_sp/uncore.c
index 1d46e407..a549acb 100644
--- a/src/soc/intel/xeon_sp/uncore.c
+++ b/src/soc/intel/xeon_sp/uncore.c
@@ -2,7 +2,7 @@
 
 #include <cbmem.h>
 #include <console/console.h>
-#include <cpu/x86/lapic.h>
+#include <cpu/x86/lapic_def.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <soc/iomap.h>