[xen staging] xen/credit2: Fix build following c/s 8e2aa76dc (take 2)

[patchbot@xxxxxxx]

commit ad33a573c009d72466432b41ba0591c64e819c19
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Sat May 30 01:52:13 2020 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Sat May 30 01:56:01 2020 +0100

    xen/credit2: Fix build following c/s 8e2aa76dc (take 2)
    
    OSSTest reports:
    
      credit2.c: In function 'cpu_runqueue_siblings_match':
      credit2.c:883:29: error: implicit declaration of function 
'cpu_nr_siblings' [-Werror=implicit-function-declaration]
           unsigned int nr_sibls = cpu_nr_siblings(cpu);
                                   ^~~~~~~~~~~~~~~
      credit2.c:883:5: error: nested extern declaration of 'cpu_nr_siblings' 
[-Werror=nested-externs]
           unsigned int nr_sibls = cpu_nr_siblings(cpu);
           ^~~~~~~~
      cc1: all warnings being treated as errors
    
    For whatever reason, cpufeature.h's inclusion is conditional, and missing 
for
    arm32.  Inlcude it explicitly.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/common/sched/credit2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/common/sched/credit2.c b/xen/common/sched/credit2.c
index f4d3f8ae6b..eb5e5a78c5 100644
--- a/xen/common/sched/credit2.c
+++ b/xen/common/sched/credit2.c
@@ -25,6 +25,7 @@
 #include <xen/trace.h>
 #include <xen/cpu.h>
 #include <xen/keyhandler.h>
+#include <asm/cpufeature.h>
 #include <asm/processor.h>
 
 #include "private.h"
--
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