nb/intel/sandybridge: Drop invalid `DEFAULT_RCBABASE` macro

RCBA is located in the PCH. Replace all instances with the
already-defined `DEFAULT_RCBA` macro, which is equivalent.

Change-Id: I4b92737820b126d32da09b69e09675464aa22e31
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45348
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/kontron/ktqm77/early_init.c b/src/mainboard/kontron/ktqm77/early_init.c
index 8df1a5e..a45c24d 100644
--- a/src/mainboard/kontron/ktqm77/early_init.c
+++ b/src/mainboard/kontron/ktqm77/early_init.c
@@ -64,7 +64,7 @@
 		.wdbbar = 0x4000000,
 		.wdbsize = 0x1000,
 		.hpet_address = CONFIG_HPET_ADDRESS,
-		.rcba = (uintptr_t)DEFAULT_RCBABASE,
+		.rcba = (uintptr_t)DEFAULT_RCBA,
 		.pmbase = DEFAULT_PMBASE,
 		.gpiobase = DEFAULT_GPIOBASE,
 		.thermalbase = 0xfed08000,