Multiple bootloader creation options for rk3399 (#1614)

* Updated rockchip64-dev to u-boot v2019.10 and BL31 v1.30 (rk3399 boards)

* Updated rk3399 to u-boot v2019.10 and BL31 v1.30

* Revert changes to renegade u-boot patches

* Moved renegade u-boot patches into board dir

* Added debug info for RockPro64 and switched sdmmc to fifo-mode

* Disabled regulators in SPL for RockPro64

* Re-enabled sd vcc regulator in SPL for RockPro64

* Some device tree and config changes for OrangePi RK3399

* Fixed Rock Pi 4A's $BOOTCONFIG

* Let some boards use mainline atf instead of the one in rkbin

For example, roc-rk3399-pc can just boot the kernel using the
mainline atf.

* Add roc-rk3399-pc

* Fixed reset in mainline ATF

* Attached ATF version to v2.2 tag

* WIP: sdmmc fifo-mode in SPL only

* Renamed source config files

* Reverted changes to rockchip64 sources config

* Reverted patch moves

* Add missing trust.ini patch to rk3399 u-boot

* Reinstated tpl/spl patches in rk3399 family

* Added $RKBIN_DIR prefix in rk3399 sources

* Add demonstration of boards bootloader assignment in rk3399

config/boards/roc-rk3399-pc.csc

@@ -0,0 +1,14 @@
+# RK3399 hexa core 4GB DDR4 SoC eMMC GBE USB3
+BOARD_NAME="ROC-RK3399-PC"
+BOARDFAMILY="rk3399"
+BOOTCONFIG="roc-rk3399-pc_defconfig"
+#
+MODULES=""
+MODULES_NEXT=""
+#
+KERNEL_TARGET="default,dev"
+CLI_TARGET="buster,bionic:default"
+DESKTOP_TARGET="buster,bionic:default"
+#
+CLI_BETA_TARGET="buster,bionic:dev"
+DESKTOP_BETA_TARGET=""