drm/i915/gvt: Fix static checker warning on intel_gvt_i2c_handle_aux_ch_write()

Static checker gave warning on:

drivers/gpu/drm/i915/gvt/edid.c:506 intel_gvt_i2c_handle_aux_ch_write()
warn: odd binop '0x0 & 0xff'

We try to return ACK for I2C reply which is defined with 0. Remove
bit shift which caused misleading bit op.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

drivers/gpu/drm/i915/gvt/edid.c

@@ -502,8 +502,7 @@ void intel_gvt_i2c_handle_aux_ch_write(struct intel_vgpu *vgpu,
 	 * ACK of I2C_WRITE
 	 * returned byte if it is READ
 	 */
-
-	aux_data_for_write |= (GVT_AUX_I2C_REPLY_ACK & 0xff) << 24;
+	aux_data_for_write |= GVT_AUX_I2C_REPLY_ACK << 24;
 	vgpu_vreg(vgpu, offset + 4) = aux_data_for_write;
 }
 

drivers/gpu/drm/i915/gvt/edid.h

@@ -44,7 +44,7 @@
 #define GVT_AUX_I2C_READ			0x1
 #define GVT_AUX_I2C_STATUS			0x2
 #define GVT_AUX_I2C_MOT				0x4
-#define GVT_AUX_I2C_REPLY_ACK			(0x0 << 6)
+#define GVT_AUX_I2C_REPLY_ACK			0x0
 
 struct intel_vgpu_edid_data {
 	bool data_valid;