debugcc: add licensing information

Information about package license is important, so lets add it.

Fixes: 79ee0d2ceead ("debugcc: add new package to debug IPQ based SoC clocks")
Signed-off-by: Petr Štetiar <[email protected]>

package/utils/debugcc/Makefile

@@ -9,6 +9,9 @@ PKG_SOURCE_DATE:=2023-11-10
 PKG_SOURCE_VERSION:=d15bea7c05f224a85dd1fcec24b0f153dbad9f6e
 PKG_MIRROR_HASH:=b6bd181db4992cf429343cd7d0fdde0f937a8f1811f5fe9e7855a0d76b0d88a0
 
+PKG_LICENSE:=BSD-3-Clause
+PKG_LICENSE_FILES:=LICENSE
+
 PKG_MAINTAINER:=Christian Marangi <[email protected]>
 
 include $(INCLUDE_DIR)/package.mk