tslib: speed up the build by skipping autoreconf

We are not carrying any patches modifying auto* files, so autoreconf isn't
needed.

[Peter: extend commit message]
Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tslib/tslib.mk

@@ -10,7 +10,6 @@ TSLIB_SOURCE = tslib-$(TSLIB_VERSION).tar.xz
 TSLIB_LICENSE = GPL, LGPL
 TSLIB_LICENSE_FILES = COPYING
 
-TSLIB_AUTORECONF = YES
 TSLIB_INSTALL_STAGING = YES
 TSLIB_INSTALL_STAGING_OPTS = DESTDIR=$(STAGING_DIR) LDFLAGS=-L$(STAGING_DIR)/usr/lib install