Revert "sb/intel/{bd82x6,ibexpeak}: Move RCBA macros to a common location"

In the end it does not look like RCBA register offsets are fully
compatible over southbridges.

This reverts commit d2d2aef6a3.

Is squashed with revert of "sb/intel/common: Fix conflicting OIC
register definition" 8aaa00401b.

Change-Id: Icbf4db8590e60573c8c11385835e0231cf8d63e6
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27038
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/cpu/intel/model_2065x/bootblock.c

@@ -24,7 +24,6 @@
 #include <cpu/intel/microcode/microcode.c>
 
 #if IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_IBEXPEAK)
-#include <southbridge/intel/common/rcba.h>
 #include <southbridge/intel/ibexpeak/pch.h>
 #include "model_2065x.h"
 #else

src/cpu/intel/model_206ax/bootblock.c

@@ -28,7 +28,6 @@
 	IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_C216)
 /* Needed for RCBA access to set Soft Reset Data register */
 #include <southbridge/intel/bd82x6x/pch.h>
-#include <southbridge/intel/common/rcba.h>
 #else
 #error "CPU must be paired with Intel BD82X6X or C216 southbridge"
 #endif