Switch AARCH32/AARCH64 to __aarch64__

NOTE: AARCH32/AARCH64 macros are now deprecated in favor of __aarch64__.

All common C compilers pre-define the same macros to signal which
architecture the code is being compiled for: __arm__ for AArch32 (or
earlier versions) and __aarch64__ for AArch64. There's no need for TF-A
to define its own custom macros for this. In order to unify code with
the export headers (which use __aarch64__ to avoid another dependency),
let's deprecate the AARCH32 and AARCH64 macros and switch the code base
over to the pre-defined standard macro. (Since it is somewhat
unintuitive that __arm__ only means AArch32, let's standardize on only
using __aarch64__.)

Change-Id: Ic77de4b052297d77f38fc95f95f65a8ee70cf200
Signed-off-by: Julius Werner <jwerner@chromium.org>
diff --git a/drivers/arm/gic/v3/gicv3_private.h b/drivers/arm/gic/v3/gicv3_private.h
index 92066e1..327a9a1 100644
--- a/drivers/arm/gic/v3/gicv3_private.h
+++ b/drivers/arm/gic/v3/gicv3_private.h
@@ -40,16 +40,16 @@
  * Macro to convert a GICR_TYPER affinity value into a MPIDR value. Bits[31:24]
  * are zeroes.
  */
-#ifdef AARCH32
+#ifdef __aarch64__
 static inline u_register_t mpidr_from_gicr_typer(uint64_t typer_val)
 {
-	return (((typer_val) >> 32) & U(0xffffff));
+	return (((typer_val >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) |
+		((typer_val >> 32) & U(0xffffff));
 }
 #else
 static inline u_register_t mpidr_from_gicr_typer(uint64_t typer_val)
 {
-	return (((typer_val >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) |
-		((typer_val >> 32) & U(0xffffff));
+	return (((typer_val) >> 32) & U(0xffffff));
 }
 #endif