parisc: remove unused variable 'compat_val'
parisc: remove unused variable 'compat_val'

clean up after commit 6e26aab98ce8a818fb1ec47f8f727a8480a9011b
(switch to generic sigaltstack)

Signed-off-by: Helge Deller <5b1e7895819cf7d6bc77091b09bbfd6d330a4e74@gmx.de>

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