drivers: base: dma-mapping: Erase blank space after pointer

This patch fixes the following checkpatch.pl error:
ERROR: "foo * bar" should be "foo *bar"

Signed-off-by: Marius Cristian Eseanu <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/base/dma-mapping.c

···
  * RETURNS:
  * Pointer to allocated memory on success, NULL on failure.
  */
-void * dmam_alloc_coherent(struct device *dev, size_t size,
+void *dmam_alloc_coherent(struct device *dev, size_t size,
 			   dma_addr_t *dma_handle, gfp_t gfp)
 {
 	struct dma_devres *dr;