MIPS: Define GCR_GIC_STATUS register fields

Add definitions for the GICEX field in the GCR_GIC_STATUS register to
mips-cm.h for use in a later patch.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/10112/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mips-cm.h

@@ -216,6 +216,10 @@ BUILD_CM_Cx_R_(tcid_8_priority,	0x80)
 #define CM_GCR_CPC_BASE_CPCEN_SHF		0
 #define CM_GCR_CPC_BASE_CPCEN_MSK		(_ULCAST_(0x1) << 0)
 
+/* GCR_GIC_STATUS register fields */
+#define CM_GCR_GIC_STATUS_GICEX_SHF		0
+#define CM_GCR_GIC_STATUS_GICEX_MSK		(_ULCAST_(0x1) << 0)
+
 /* GCR_REGn_BASE register fields */
 #define CM_GCR_REGn_BASE_BASEADDR_SHF		16
 #define CM_GCR_REGn_BASE_BASEADDR_MSK		(_ULCAST_(0xffff) << 16)