[PATCH] crypto: sun4i-ss: mark sun4i_hash() static

On Sun, Sep 18, 2016 at 08:52:44PM +0800, Baoyou Xie wrote:

We get 1 warning when building kernel with W=1:
drivers/crypto/sunxi-ss/sun4i-ss-hash.c:168:5: warning: no previous prototype for 'sun4i_hash' [-Wmissing-prototypes]

In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
So this patch marks it 'static'.

Signed-off-by: Baoyou Xie <redacted>

Patch applied.  Thanks.
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