Bump Buildroot to 2021.02-rc3 (#1260)

* Rebase patches to Buildroot 2021.02-rc3

* Update Buildroot to 2021.02-rc3

* Declare Kernel headers to be Linux version 5.10 (since they are, and new Buildroot knows about 5.10)

buildroot/package/rtty/0001-src-CMakeLists.txt-fix-build-with-mbedtls-but-withou.patch

@@ -1,47 +0,0 @@
-From 0982308255dd3fd70e7b93aa88a8f3c5b9c1b845 Mon Sep 17 00:00:00 2001
-From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
-Date: Sun, 30 Aug 2020 21:15:06 +0200
-Subject: [PATCH] src/CMakeLists.txt: fix build with mbedtls but without zlib
-
-Building with mbedtls but without zlib will result in the following
-build failure:
-
--- Found MbedTLS: /home/peko/autobuild/instance-0/output-1/per-package/rtty/host/powerpc64-buildroot-linux-gnu/sysroot/usr/lib/libmbedtls.so (found version "2.16.7")
--- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
--- Select MbedTLS(PolarSSL) as the SSL backend
-CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
-Please set them or make sure they are set and tested correctly in the CMake files:
-ZLIB_LIBRARY
-    linked by target "rtty" in directory /home/peko/autobuild/instance-0/output-1/build/rtty-7.1.4/src
-
--- Configuring incomplete, errors occurred!
-
-Fixes:
- - http://autobuild.buildroot.org/results/a0ebffe58bbf14cab74b7d2111d4d88a9c725273
-
-Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
-[Upstream status: https://github.com/zhaojh329/rtty/pull/77]
----
- src/CMakeLists.txt | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
-index 10f6626..d09e848 100644
---- a/src/CMakeLists.txt
-+++ b/src/CMakeLists.txt
-@@ -77,7 +77,11 @@ else()
-     elseif(RTTY_USE_MBEDTLS)
-         set(SSL_NAME "MbedTLS(PolarSSL)")
-         set(SSL_INC ${MBEDTLS_INCLUDE_DIR})
--        set(SSL_LIB ${MBEDTLS_LIBRARIES} ${ZLIB_LIBRARIES})
-+        if(ZLIB_FOUND)
-+            set(SSL_LIB ${MBEDTLS_LIBRARIES} ${ZLIB_LIBRARIES})
-+        else()
-+            set(SSL_LIB ${MBEDTLS_LIBRARIES}) 
-+        endif()
-         set(RTTY_HAVE_MBEDTLS_CONFIG 1)
-     endif()
- 
--- 
-2.28.0
-

buildroot/package/rtty/rtty.hash

@@ -1,2 +1,2 @@
-sha256  f0b8cf4c4d3d4b34d10097fe430d32ab1576edbf41131d27b6b964e078be1716  rtty-7.1.4.tar.gz
+sha256  4c60eacd7a653988a1907284de2ecf360c74f55ef9e21c40b9ebd87af6570908  rtty-7.3.2.tar.gz
 sha256  99efed4bbc0b62f96f999ef23399e38234fb91651af734fd389a52b033a85b55  LICENSE

buildroot/package/rtty/rtty.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-RTTY_VERSION = 7.1.4
+RTTY_VERSION = 7.3.2
 RTTY_SITE = https://github.com/zhaojh329/rtty/releases/download/v$(RTTY_VERSION)
 RTTY_LICENSE = MIT
 RTTY_LICENSE_FILES = LICENSE