This reverts commit 
9171e5e6a20a9cd4992ff9c7cbee13c6fdf7b0b1.
I can't reproduce the compile warnings any more.  The warnings
might be some weird cross-compiling set up.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
        struct wm8903_priv *wm8903 = codec->private_data;
        struct i2c_client *i2c = codec->control_data;
        u16 val;
-       u16 uninitialized_var(reg);
-       int uninitialized_var(shift);
+       u16 reg;
+       int shift;
        u16 cp_reg = wm8903_read(codec, WM8903_CHARGE_PUMP_0);
 
        switch (w->reg) {