curl: bump to 7.56.1

Refresh patches
Remove 320-curl-confopts.m4-fix-disable-threaded-resolver.patch as
integrated upstream

See https://curl.haxx.se/changes.html for the bugfixes in 7.56.0 and
7.56.1

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

package/network/utils/curl/Makefile

@@ -8,15 +8,15 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=curl
-PKG_VERSION:=7.55.1
-PKG_RELEASE:=2
+PKG_VERSION:=7.56.1
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://dl.uxnr.de/mirror/curl/ \
 	http://curl.mirror.anstey.ca/ \
 	http://curl.askapache.com/download/ \
 	https://curl.haxx.se/download/
-PKG_HASH:=e5b1a92ed3b0c11f149886458fa063419500819f1610c020d62f25b8e4b16cfb
+PKG_HASH:=2594670367875e7d87b0f129b5e4690150780884d90244ba0fe3e74a778b5f90
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING

package/network/utils/curl/patches/310-mbedtls-disable-runtime-version-check.patch

@@ -1,8 +1,8 @@
 --- a/lib/vtls/mbedtls.c
 +++ b/lib/vtls/mbedtls.c
-@@ -796,7 +796,7 @@ void Curl_mbedtls_session_free(void *ptr
+@@ -814,7 +814,7 @@ static void Curl_mbedtls_session_free(vo
  
- size_t Curl_mbedtls_version(char *buffer, size_t size)
+ static size_t Curl_mbedtls_version(char *buffer, size_t size)
  {
 -  unsigned int version = mbedtls_version_get_number();
 +  unsigned int version = MBEDTLS_VERSION_NUMBER;

package/network/utils/curl/patches/320-curl-confopts.m4-fix-disable-threaded-resolver.patch

@@ -1,36 +0,0 @@
-From 3cb4bb6b5fb8a936cb69e2e9ea6a4e692122abb9 Mon Sep 17 00:00:00 2001
-From: Jakub Zakrzewski <slither.jz@gmail.com>
-Date: Tue, 15 Aug 2017 13:21:33 -0400
-Subject: [PATCH] curl-confopts.m4: fix --disable-threaded-resolver
-
-Closes https://github.com/curl/curl/issues/1784
----
- m4/curl-confopts.m4 | 8 ++++----
- 1 file changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/m4/curl-confopts.m4 b/m4/curl-confopts.m4
-index d77a884..6dcd0f1 100644
---- a/m4/curl-confopts.m4
-+++ b/m4/curl-confopts.m4
-@@ -37,14 +37,14 @@ AC_HELP_STRING([--enable-threaded-resolver],[Enable threaded resolver])
- AC_HELP_STRING([--disable-threaded-resolver],[Disable threaded resolver]),
-   OPT_THRES=$enableval)
-   case "$OPT_THRES" in
--    *)
--      dnl configure option not specified
--      want_thres="yes"
--      ;;
-     no)
-       dnl --disable-threaded-resolver option used
-       want_thres="no"
-       ;;
-+    *)
-+      dnl configure option not specified
-+      want_thres="yes"
-+      ;;
-   esac
-   AC_MSG_RESULT([$want_thres])
- ])
--- 
-1.9.1
-