arm64: Rename reserved values for CTR_EL0.L1Ip

We now have *two* values for CTR_EL0.L1Ip that are reserved.
Which makes things a bit awkward. In order to lift the ambiguity,
rename RESERVED (0b01) to RESERVED_AIVIVT, and VPIPT (0b00) to
RESERVED_VPIPT.

This makes it clear which of these meant what, and I'm sure
archeologists will find it useful...

Reviewed-by: Zenghui Yu <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Anshuman Khandual <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: Marc Zyngier

arch/arm64/tools/sysreg

@@ -2004,9 +2004,10 @@ Field	27:24	CWG
 Field	23:20	ERG
 Field	19:16	DminLine
 Enum	15:14	L1Ip
-	0b00	VPIPT
+	# This was named as VPIPT in the ARM but now documented as reserved
+	0b00	RESERVED_VPIPT
 	# This is named as AIVIVT in the ARM but documented as reserved
-	0b01	RESERVED
+	0b01	RESERVED_AIVIVT
 	0b10	VIPT
 	0b11	PIPT
 EndEnum