poky: reset subtree on master HEAD(a88251b3e7)

As part of the last subtree update, I used master-next as the
subtree basis because there was a fix we needed in order to get QEMU
to pass.  I didn't realize that master-next deviated (because they use
to just have short-term patches in it).  Reset the content to the same
fix but from the master branch.

Change-Id: Ic7d2f0ac42e9da3eb263586b26ba56d8798d5bcf
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/poky/documentation/ref-manual/qa-checks.rst b/poky/documentation/ref-manual/qa-checks.rst
index 58526a0..53b1836 100644
--- a/poky/documentation/ref-manual/qa-checks.rst
+++ b/poky/documentation/ref-manual/qa-checks.rst
@@ -799,6 +799,14 @@
     section in the Yocto Project Development Tasks Manual. See also the
     ":ref:`ref-classes-ptest`" section.
 
+.. _qa-check-virtual-slash:
+
+- ``<variable> is set to <value> but the substring 'virtual/' holds no meaning in this context. It only works for build time dependencies, not runtime ones. It is suggested to use 'VIRTUAL-RUNTIME_' variables instead.``
+
+    ``virtual/`` is a convention intended for use in the build context
+    (i.e. :term:`PROVIDES` and :term:`DEPENDS`) rather than the runtime
+    context (i.e. :term:`RPROVIDES` and :term:`RDEPENDS`). Use
+    :term:`VIRTUAL-RUNTIME` variables instead for the latter.
 
 
 Configuring and Disabling QA Checks