package/libtirpc: bump to version 1.2.6

This fixes build on riscv64:

http://autobuild.buildroot.net/results/a334f774e95fb7805568fc3868d5cf1d790a6e73
http://autobuild.buildroot.net/results/9cf80bdd4d329788c89596b56205ef215ee09c35

There is also a fix for build with -fno-common (default for gcc-10)

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libtirpc/libtirpc.hash

@@ -1,5 +1,5 @@
 # From sourceforge's info on download page:
-sha1 ab80619b214d93e5cfbf22a0d01e1ee06d434326  libtirpc-1.2.5.tar.bz2
+sha1 f182235e32942fc0ac6b9b5b6fe7e32f69362659  libtirpc-1.2.6.tar.bz2
 # Locally computed
-sha256 f3b6350c7e9c3cd9c58fc7a5e5f8e6be469cc571bb5eb31eb9790b3e675186ca  libtirpc-1.2.5.tar.bz2
+sha256 4278e9a5181d5af9cd7885322fdecebc444f9a3da87c526e7d47f7a12a37d1cc  libtirpc-1.2.6.tar.bz2
 sha256 17cf6098f95bdbb269f0bbc68e76c88fe20487ca7ec53f454923ab4256ecd2e7  COPYING

package/libtirpc/libtirpc.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBTIRPC_VERSION = 1.2.5
+LIBTIRPC_VERSION = 1.2.6
 LIBTIRPC_SOURCE = libtirpc-$(LIBTIRPC_VERSION).tar.bz2
 LIBTIRPC_SITE = http://downloads.sourceforge.net/project/libtirpc/libtirpc/$(LIBTIRPC_VERSION)
 LIBTIRPC_LICENSE = BSD-3-Clause