crypto: caam - Remove GFP_DMA and add DMA alignment padding

GFP_DMA does not guarantee that the returned memory is aligned
for DMA.  It should be removed where it is superfluous.

However, kmalloc may start returning DMA-unaligned memory in future
so fix this by adding the alignment by hand.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/qi.h

@@ -9,6 +9,8 @@
 #ifndef __QI_H__
 #define __QI_H__
 
+#include <crypto/algapi.h>
+#include <linux/compiler_attributes.h>
 #include <soc/fsl/qman.h>
 #include "compat.h"
 #include "desc.h"
@@ -58,8 +60,10 @@ enum optype {
  * @qidev: device pointer for CAAM/QI backend
  */
 struct caam_drv_ctx {
-	u32 prehdr[2];
-	u32 sh_desc[MAX_SDLEN];
+	struct {
+		u32 prehdr[2];
+		u32 sh_desc[MAX_SDLEN];
+	} __aligned(CRYPTO_DMA_ALIGN);
 	dma_addr_t context_a;
 	struct qman_fq *req_fq;
 	struct qman_fq *rsp_fq;
@@ -67,7 +71,7 @@ struct caam_drv_ctx {
 	int cpu;
 	enum optype op_type;
 	struct device *qidev;
-} ____cacheline_aligned;
+};
 
 /**
  * caam_drv_req - The request structure the driver application should fill while
@@ -88,7 +92,7 @@ struct caam_drv_req {
 	struct caam_drv_ctx *drv_ctx;
 	caam_qi_cbk cbk;
 	void *app_ctx;
-} ____cacheline_aligned;
+} __aligned(CRYPTO_DMA_ALIGN);
 
 /**
  * caam_drv_ctx_init - Initialise a CAAM/QI driver context