package/musl: bump to version 1.1.22

From the release notes:
Notable regressions in sscanf and pthread_key_create introduced in 1.1.21
have also been fixed, along with various other bugs and minor conformance
issues.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 66976dff9677d8a080da5abad0c79914f3bd0a09)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/musl/musl.hash

@@ -1,4 +1,4 @@
 # Locally calculated after checking pgp signature from
-# http://www.musl-libc.org/releases/musl-1.1.21.tar.gz.asc
-sha256  c742b66f6f49c9e5f52f64d8b79fecb5a0f6e0203fca176c70ca20f6be285f44  musl-1.1.21.tar.gz
+# http://www.musl-libc.org/releases/musl-1.1.22.tar.gz.asc
+sha256  8b0941a48d2f980fd7036cfbd24aa1d414f03d9a0652ecbd5ec5c7ff1bee29e3  musl-1.1.22.tar.gz
 sha256  a3ae1b9fc5d4938f5734734383b9813d27a5652df23010c6f9d4c5419b239a41  COPYRIGHT

package/musl/musl.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MUSL_VERSION = 1.1.21
+MUSL_VERSION = 1.1.22
 MUSL_SITE = http://www.musl-libc.org/releases
 MUSL_LICENSE = MIT
 MUSL_LICENSE_FILES = COPYRIGHT