crypto: img-hash - fix spelling mistake in dev_err error message

Trival change, fix spelling mistake 'aquire' -> 'acquire' in
dev_err message.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index ad47d0d..68e8aa9 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -334,7 +334,7 @@
 
 	hdev->dma_lch = dma_request_slave_channel(hdev->dev, "tx");
 	if (!hdev->dma_lch) {
-		dev_err(hdev->dev, "Couldn't aquire a slave DMA channel.\n");
+		dev_err(hdev->dev, "Couldn't acquire a slave DMA channel.\n");
 		return -EBUSY;
 	}
 	dma_conf.direction = DMA_MEM_TO_DEV;