soc/intel/broadwell: Define RCBA register LCAP

This register has a name. Use it.

Change-Id: I952584c4aa92fc917d2fc0ef174ee12ae3eeee81
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46340
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/soc/intel/broadwell/finalize.c

@@ -95,8 +95,8 @@ static void broadwell_finalize(void *unused)
 	/* Lock */
 	RCBA32_OR(0x3a6c, 0x00000001);
 
-	/* Read+Write the following register */
-	RCBA32(0x21a4) = RCBA32(0x21a4);
+	/* Read+Write this R/WO register */
+	RCBA32(LCAP) = RCBA32(LCAP);
 
 	/* Indicate finalize step with post code */
 	post_code(POST_OS_BOOT);

src/soc/intel/broadwell/include/soc/rcba.h

@@ -48,6 +48,8 @@
 #define PIRQG		6
 #define PIRQH		7
 
+#define LCAP		0x21a4
+
 /* IO Buffer Programming */
 #define IOBPIRI		0x2330
 #define IOBPD		0x2334