cryptodev-linux: add upstream patch for newer kernels

package/cryptodev-linux/patches/patch-zc_c

@@ -0,0 +1,25 @@
+--- cryptodev-linux-1.8.orig/zc.c	2015-11-28 02:07:11.000000000 +0100
++++ cryptodev-linux-1.8/zc.c	2016-09-29 03:07:39.505502335 +0200
+@@ -59,7 +59,12 @@ int __get_userbuf(uint8_t __user *addr,
+ 	}
+ 
+ 	down_read(&mm->mmap_sem);
+-	ret = get_user_pages(task, mm,
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0))
++	ret = get_user_pages_remote(
++#else
++	ret = get_user_pages(
++#endif
++			task, mm,
+ 			(unsigned long)addr, pgcount, write, 0, pg, NULL);
+ 	up_read(&mm->mmap_sem);
+ 	if (ret != pgcount)
+@@ -119,7 +124,7 @@ void release_user_pages(struct csession
+ 		else
+ 			ses->readonly_pages--;
+ 
+-		page_cache_release(ses->pages[i]);
++		put_page(ses->pages[i]);
+ 	}
+ 	ses->used_pages = 0;
+ }