libusb: Update to 1.0.21

Update libusb to 1.0.21

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

package/libs/libusb/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libusb
-PKG_VERSION:=1.0.20
+PKG_VERSION:=1.0.21
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=@SF/$(PKG_NAME)
-PKG_HASH:=cb057190ba0a961768224e4dc6883104c6f945b2bf2ef90d7da39e7c1834f7ff
+PKG_HASH:=7dce9cce9a81194b7065ee912bcd55eeffebab694ea403ffb91b67db66b1824b
 
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=0