rk3568: add ramboot support

from rk_boot_all: commit id: 379f85037

Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Change-Id: If80e525f0cfcc1cb05b4fca824965aee259ba7ed

RKBOOT/RK3568MINIALL_RAMBOOT.ini

@@ -0,0 +1,25 @@
+[CHIP_NAME]
+NAME=RK3568
+[VERSION]
+MAJOR=1
+MINOR=6
+[CODE471_OPTION]
+NUM=1
+Path1=bin/rk35/rk3568_ddr_1560MHz_v1.06.bin
+Sleep=1
+[CODE472_OPTION]
+NUM=1
+Path1=bin/rk35/rk3568_ramboot_v1.08.bin
+[LOADER_OPTION]
+NUM=2
+LOADER1=FlashData
+LOADER2=FlashBoot
+FlashData=bin/rk35/rk3568_ramboot_null0.bin
+FlashBoot=bin/rk35/rk3568_ramboot_null1.bin
+[OUTPUT]
+PATH=rk356x_ramboot_loader_v1.06.108.bin
+[SYSTEM]
+NEWIDB=true
+[FLAG]
+471_RC4_OFF=true
+RC4_OFF=true