ustr: fix license name

Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ustr/ustr.mk

@@ -8,7 +8,7 @@ USTR_VERSION = 1.0.4
 USTR_SOURCE = ustr-$(USTR_VERSION).tar.bz2
 USTR_SITE = http://www.and.org/ustr/$(USTR_VERSION)/
 USTR_LICENSE = BSD-2c MIT LGPLv2+
-USTR_LICENSE_FILES = LICENCE LICENSE_BSD LICENSE_LGPL LICENSE_MIT
+USTR_LICENSE_FILES = LICENSE LICENSE_BSD LICENSE_LGPL LICENSE_MIT
 
 USTR_INSTALL_STAGING = YES