mpd: bump to version 0.20.6

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mpd/mpd.hash

@@ -1,3 +1,3 @@
 # Locally calculated after checking pgp signature
-sha256  712b25351c12616630c580204e1c3dcba3ae2993a56cff1c346c87e334d69728  mpd-0.20.4.tar.xz
+sha256  f4055e1189e5cc00e83706b2e0b5ead924ced0303e073d7802ee9f9a8eba4b47  mpd-0.20.6.tar.xz
 sha256  8305b8bc026f4b6bde28b8dd09bfdddbe5590acf36358eed4d083a396e301730  mpd-0.19.21.tar.xz

package/mpd/mpd.mk

@@ -6,7 +6,7 @@
 
 MPD_VERSION_MAJOR = $(call qstrip,$(BR2_PACKAGE_MPD_VERSION_STRING))
 ifeq ($(BR2_PACKAGE_MPD_VERSION_0_20),y)
-MPD_VERSION = $(MPD_VERSION_MAJOR).4
+MPD_VERSION = $(MPD_VERSION_MAJOR).6
 else
 MPD_VERSION = $(MPD_VERSION_MAJOR).21
 endif