cryptodev-modules: Add bbappend to add patch

This adds a patch to cryptodev-module to sync up the API change that
was added in the linux-intel kernel backport from 4.10 -> 4.9. The
patch just forces the code path to use the latest API.

This uses anon python to ensure it only applies when PREFERRED_PROVIDER
is set to linux-intel and KERNEL_VERSION is 4.9 (LTS).

Signed-off-by: Saul Wold <sgw@linux.intel.com>

common/recipes-kernel/cryptodev/cryptodev-module/0001-zc-Force-4.10-get_user_pages_remote-API.patch

@@ -0,0 +1,29 @@
+From 3fcc81ad127c267018aed96a359bbf01db1bd8ee Mon Sep 17 00:00:00 2001
+From: Saul Wold <sgw@linux.intel.com>
+Date: Sat, 1 Apr 2017 11:43:31 -0700
+Subject: [PATCH] zc: Force 4.10 get_user_pages_remote API
+
+This change forces the newer API, as the linux-intel 4.9-LTS kernel
+backported the 4.10 API change in the page handling code.
+
+Signed-off-by: Saul Wold <sgw@linux.intel.com>
+---
+ zc.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/zc.c b/zc.c
+index 2f4ea99..fcd0669 100644
+--- a/zc.c
++++ b/zc.c
+@@ -67,7 +67,7 @@ int __get_userbuf(uint8_t __user *addr, uint32_t len, int write,
+ 	ret = get_user_pages_remote(task, mm,
+ 			(unsigned long)addr, pgcount, write, 0, pg, NULL);
+ #  else
+-#    if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0))
++#    if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) & 0)
+ 	ret = get_user_pages_remote(task, mm,
+ 			(unsigned long)addr, pgcount, write ? FOLL_WRITE : 0,
+ 			pg, NULL);
+-- 
+2.7.4
+

common/recipes-kernel/cryptodev/cryptodev-module_%.bbappend

@@ -0,0 +1,9 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+python() {
+    if ((d.getVar("PREFERRED_PROVIDER_virtual/kernel").startswith("linux-intel")) and
+        (d.getVar("PREFERRED_VERSION_linux-intel").startswith("4.9"))):
+        src_uri = d.getVar("SRC_URI")
+        d.setVar("SRC_URI", src_uri +
+                 " file://0001-zc-Force-4.10-get_user_pages_remote-API.patch")
+}