feat(rme): save PAuth context when RME is enabled

This patch enables CTX_INCLUDE_PAUTH_REGS for RME builds.
The RMM-EL3 specification is also updated to reflect the changes
and also version of the same is bumped from 0.1 to 0.2.

Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
Change-Id: I2e96a592d2b75abaee24294240c1727c5ceba420
diff --git a/Makefile b/Makefile
index 1a80244..54b7928 100644
--- a/Makefile
+++ b/Makefile
@@ -152,7 +152,7 @@
 ARM_ARCH_MINOR := 5
 ENABLE_FEAT_ECV = 1
 ENABLE_FEAT_FGT = 1
-
+CTX_INCLUDE_PAUTH_REGS := 1
 # RME enables CSV2_2 extension by default.
 ENABLE_FEAT_CSV2_2 = 1