Reorder unpriv chapters more logically

The basic principle is to group all Zy extensions together, following Y.

src/riscv-unprivileged.adoc

@@ -157,37 +157,37 @@ December 2019._
 include::colophon.adoc[]
 include::intro.adoc[]
 include::rv32.adoc[]
-include::zifencei.adoc[]
-include::zihintntl.adoc[]
-include::zihintpause.adoc[]
 include::rv32e.adoc[]
 include::rv64.adoc[]
 include::rv128.adoc[]
-include::m-st-ext.adoc[]
-include::a-st-ext.adoc[]
+include::zifencei.adoc[]
+include::zihintntl.adoc[]
+include::zihintpause.adoc[]
 include::zicsr.adoc[]
+include::zimop.adoc[]
+include::zicond.adoc[]
 include::counters.adoc[]
+include::m-st-ext.adoc[]
+include::a-st-ext.adoc[]
+include::zawrs.adoc[]
+include::zacas.adoc[]
+include::rvwmo.adoc[]
+include::ztso-st-ext.adoc[]
+include::cmo.adoc[]
 include::f-st-ext.adoc[]
 include::d-st-ext.adoc[]
 include::q-st-ext.adoc[]
 include::zfh.adoc[]
-include::rvwmo.adoc[]
+include::zfa.adoc[]
+include::zfinx.adoc[]
 include::c-st-ext.adoc[]
-include::zimop.adoc[]
+include::zc.adoc[]
 include::b-st-ext.adoc[]
 include::j-st-ext.adoc[]
 include::p-st-ext.adoc[]
 include::v-st-ext.adoc[]
-include::zfinx.adoc[]
-include::zfa.adoc[]
-include::ztso-st-ext.adoc[]
-include::scalar-crypto.adoc[]
 include::vector-crypto.adoc[]
-include::zacas.adoc[]
-include::zicond.adoc[]
-include::cmo.adoc[]
-include::zawrs.adoc[]
-include::zc.adoc[]
+include::scalar-crypto.adoc[]
 include::rv-32-64g.adoc[]
 include::extending.adoc[]
 include::naming.adoc[]