libyang: upgrade 2.1.111 -> 2.1.128

Changelog:
===========
revert of identityref canonical value change
the identity always printed with the module name as the prefix
data tree and hash table optimizations
opaque node handling fixes and improvements
lots of other bug fixes

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/libyang/libyang_2.1.128.bb

@@ -6,7 +6,7 @@ LICENSE = "BSD-3-Clause"
 
 LIC_FILES_CHKSUM = "file://LICENSE;md5=f3916d7d8d42a6508d0ea418cfff10ad"
 
-SRCREV = "8b0b910a2dcb7360cb5b0aaefbd1338271d50946"
+SRCREV = "7e5ea21030fe6632b6faad30c0de8d9669503773"
 
 SRC_URI = "git://github.com/CESNET/libyang.git;branch=master;protocol=https \
            file://0001-test_context-skip-test-case-test_searchdirs.patch \