package/tslib: update to 1.21

The release page https://github.com/libts/tslib/releases has the short
changelog overview and we include the added plugin when building statically
linked.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Tested-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/tslib/tslib.hash

@@ -1,5 +1,5 @@
-# https://github.com/libts/tslib/releases/download/1.20/tslib-1.20.tar.xz.sha256
-sha256  fda8c088e348b40cc68269460d562778aa4ad8f8c2281f147b09f305ba714777  tslib-1.20.tar.xz
+# https://github.com/libts/tslib/releases/download/1.21/tslib-1.21.tar.xz.sha256
+sha256  d2a57b823ea59e53a3b130eef05dfed1190b857854f886eec764e1ca1957cf56  tslib-1.21.tar.xz
 
 # Locally computed
 sha256  9b872a8a070b8ad329c4bd380fb1bf0000f564c75023ec8e1e6803f15364b9e9  COPYING

package/tslib/tslib.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-TSLIB_VERSION = 1.20
+TSLIB_VERSION = 1.21
 TSLIB_SITE = https://github.com/libts/tslib/releases/download/$(TSLIB_VERSION)
 TSLIB_SOURCE = tslib-$(TSLIB_VERSION).tar.xz
 TSLIB_LICENSE = GPL-2.0+ (programs), LGPL-2.1+ (libraries)
@@ -28,7 +28,8 @@ TSLIB_CONF_OPTS += \
 	--enable-debounce=static \
 	--enable-skip=static \
 	--enable-lowpass=static \
-	--enable-invert=static
+	--enable-invert=static \
+	--enable-evthres=static
 endif
 
 $(eval $(autotools-package))