arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12

The 2025 extensions add FEAT_SVE2P3 and FEAT_SVE_B16MM.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Author: broonie

arch/arm64/tools/sysreg

@@ -1496,6 +1496,7 @@ UnsignedEnum	27:24	B16B16
 	0b0000	NI
 	0b0001	IMP
 	0b0010	BFSCALE
+	0b0011	B16MM
 EndEnum
 UnsignedEnum	23:20	BF16
 	0b0000	NI
@@ -1522,6 +1523,7 @@ UnsignedEnum	3:0	SVEver
 	0b0001	SVE2
 	0b0010	SVE2p1
 	0b0011	SVE2p2
+	0b0100	SVE2p3
 EndEnum
 EndSysreg