openssl: add MODULES_DIR MACRO for provider

Add MODULES_DIR MACRO for provider useful if the relevant package
require to define the default OpenSSL MODULES_PATH.

Signed-off-by: Christian Marangi <[email protected]>

include/openssl-module.mk

@@ -3,6 +3,7 @@
 # Copyright (C) 2022-2023 Enéas Ulir de Queiroz
 
 ENGINES_DIR=engines-3
+MODULES_DIR=ossl-modules
 
 define Package/openssl/module/Default
   SECTION:=libs
@@ -74,6 +75,6 @@ endef
 # 1 = provider name
 # 2 = [ package name, defaults to libopenssl-$(1) ]
 define Package/openssl/add-provider
-  $(call Package/openssl/add-module,provider,$(1),/usr/lib/ossl-modules,$(2))
+  $(call Package/openssl/add-module,provider,$(1),/usr/lib/$(MODULES_DIR),$(2))
 endef