xenpm: Don't build outside of x86

xenpm doesn't provide any interesting usable features outside of x86,
skip building it if we are not x86.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Teddy Astie <teddy.astie@vates.tech>
Acked-by: Anthony PERARD <anthony.perard@vates.tech>

CHANGELOG.md

@@ -19,6 +19,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
      prior to the version 1.0 release, and there has been no development since
      before then in Xen.
 
+ - Removed xenpm tool on non-x86 platforms as it doesn't actually provide
+   anything useful outside of x86.
+
 ## [4.21.0](https://xenbits.xenproject.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.21.0) - 2025-11-19
 
 ### Changed

tools/misc/Makefile

@@ -29,7 +29,7 @@ INSTALL_SBIN                   += xencov
 INSTALL_SBIN                   += xenhypfs
 INSTALL_SBIN                   += xenlockprof
 INSTALL_SBIN                   += xenperf
-INSTALL_SBIN                   += xenpm
+INSTALL_SBIN-$(CONFIG_X86)     += xenpm
 INSTALL_SBIN                   += xenwatchdogd
 INSTALL_SBIN                   += xen-access
 INSTALL_SBIN                   += xen-livepatch