libsrtp2: move folder, bump to 2.3.0

Bump to upstream release 2.3.0. Move folder and change PKG_NAME so that
we don't have to deal with how github names the tar.gz archive.

Also, don't install the libsrtp2.so symlink anymore on target, as it is
not required and only used in staging.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

libs/libsrtp/Makefile

@@ -7,18 +7,13 @@
 #
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=libsrtp2
-PKG_VERSION:=2.2.0
-PKG_RELEASE:=2
+PKG_NAME:=libsrtp
+PKG_VERSION:=2.3.0
+PKG_RELEASE:=1
 
-PKG_SOURCE_PROTO:=git
-PKG_SOURCE_URL:=https://github.com/cisco/libsrtp.git
-PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=94ac00d5ac6409e3f6409e4a5edfcdbdaa7fdabe
-PKG_MIRROR_HASH:=0429edcddfe9d36ee47eb221384c528bbe31ee9255e216f9755641c7b6083457
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
-
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE:=libsrtp-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/cisco/libsrtp/tar.gz/v$(PKG_VERSION)?
+PKG_HASH:=94093a5d04c5f4743e8d81182b76938374df6d393b45322f24960d250b0110e8
 
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE
@@ -57,7 +52,7 @@ endef
 define Package/libsrtp2/install
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) \
-		$(PKG_INSTALL_DIR)/usr/lib/libsrtp2.so* \
+		$(PKG_INSTALL_DIR)/usr/lib/libsrtp2.so.* \
 		$(1)/usr/lib/
 endef