sparc32: avoid build warning at mm/percpu.c:1647
sparc32: avoid build warning at mm/percpu.c:1647

Fix following warning:

mm/percpu.c: In function 'pcpu_embed_first_chunk':
mm/percpu.c:1647:3: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'unsigned int'

Signed-off-by: Daniel Hellstrom <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@gaisler.com>
[sam: added warning message to changelog, use _AC()]
Signed-off-by: Sam Ravnborg <f16bed56189e249fe4ca8ed10a1ecae60e8ceac0@ravnborg.org>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas