[xen staging-4.15] update Xen version to 4.15.2-pre

[patchbot@xxxxxxx]

commit 7799c8a0261867158da5dc9c22ef6c1cde6ab97a
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Oct 15 10:58:16 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Oct 15 10:58:16 2021 +0200

    update Xen version to 4.15.2-pre
---
 xen/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/Makefile b/xen/Makefile
index 5d5a1a0fa6..251fed79f0 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -2,7 +2,7 @@
 # All other places this is stored (eg. compile.h) should be autogenerated.
 export XEN_VERSION       = 4
 export XEN_SUBVERSION    = 15
-export XEN_EXTRAVERSION ?= .1$(XEN_VENDORVERSION)
+export XEN_EXTRAVERSION ?= .2-pre$(XEN_VENDORVERSION)
 export XEN_FULLVERSION   = $(XEN_VERSION).$(XEN_SUBVERSION)$(XEN_EXTRAVERSION)
 -include xen-version
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging-4.15