netdata: update to version 1.26.0

Disable ebpf plugin as in OpenWrt there is no package libbpf.
- With that, I need to introduce patch, which is not merged into netdata,
yet. Without it, I still got during cross-compilation this error:
checking for externaldeps/libbpf/libbpf.a... configure: error: cannot check for file existence when cross compiling

- And yes, the flag was there.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

admin/netdata/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=netdata
-PKG_VERSION:=1.23.2
+PKG_VERSION:=1.26.0
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=Josef Schlehofer <pepe.schlehofer@gmail.com>, Daniel Engberg <daniel.engberg.lists@pyret.net>
@@ -18,7 +18,7 @@ PKG_CPE_ID:=cpe:/a:my-netdata:netdata
 
 PKG_SOURCE:=$(PKG_NAME)-v$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/netdata/netdata/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=b6dd13292e0b1fb4137b1f7c0dc3d7c5e8a1bf408b82c2b8394f3751800e0eb5
+PKG_HASH:=be32d49381da39196574011653ea863f2064a2168bc9b61a1354171b27ce370b
 
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
@@ -52,6 +52,7 @@ CONFIGURE_ARGS += \
 	--with-math \
 	--disable-x86-sse \
 	--enable-lto \
+	--disable-ebpf \
 	--without-libcap \
 	--disable-https \
 	--disable-dbengine \