feat(sptool): transfer list to replace SP Pkg

Generate the rules for calling 'tlc' tool, and generating
a partition package as a TL:
- The data is aligned to 4k.
- Using TE types 0x103 for FF-A manifest, and 0x106 for
FF-A SP binary.

Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I1941e3e8f43d8dad33cdd0dea0571cf4a0d5e8f3
diff --git a/Makefile b/Makefile
index 51c7b2e..97a42ac 100644
--- a/Makefile
+++ b/Makefile
@@ -114,6 +114,9 @@
 SP_MK_GEN		?=	${SPTOOLPATH}/sp_mk_generator.py
 SP_DTS_LIST_FRAGMENT	?=	${BUILD_PLAT}/sp_list_fragment.dts
 
+# Variables for use with sptool
+TLCTOOL 		?=	poetry run tlc
+
 # Variables for use with ROMLIB
 ROMLIBPATH		?=	lib/romlib