Blackfin: smp: add smp_mb() to keep coherency
Blackfin: smp: add smp_mb() to keep coherency

After use generic smp helpers, smp_mb() should be added to keep coherency.

Signed-off-by: Steven Miao <eb4bb6630d9afd913be5ae87090c50ac1ba7a4b2@gmail.com>
Signed-off-by: Bob Liu <d77a20a83082b67b4fa80a32c4df5692104d5480@gmail.com>

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