arm64: Add TCR_EPD{0,1} definitions

We are soon going to play with TCR_EL1.EPD{0,1}, so let's add the
relevant definitions.
Reviewed-by: NJames Morse <james.morse@arm.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

arch/arm64/include/asm/pgtable-hwdef.h

@@ -224,6 +224,8 @@
 #define TCR_TxSZ_WIDTH		6
 #define TCR_T0SZ_MASK		(((UL(1) << TCR_TxSZ_WIDTH) - 1) << TCR_T0SZ_OFFSET)
 
+#define TCR_EPD0_SHIFT		7
+#define TCR_EPD0_MASK		(UL(1) << TCR_EPD0_SHIFT)
 #define TCR_IRGN0_SHIFT		8
 #define TCR_IRGN0_MASK		(UL(3) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_NC		(UL(0) << TCR_IRGN0_SHIFT)
@@ -231,6 +233,8 @@
 #define TCR_IRGN0_WT		(UL(2) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_WBnWA		(UL(3) << TCR_IRGN0_SHIFT)
 
+#define TCR_EPD1_SHIFT		23
+#define TCR_EPD1_MASK		(UL(1) << TCR_EPD1_SHIFT)
 #define TCR_IRGN1_SHIFT		24
 #define TCR_IRGN1_MASK		(UL(3) << TCR_IRGN1_SHIFT)
 #define TCR_IRGN1_NC		(UL(0) << TCR_IRGN1_SHIFT)