rk3188: add bootloader generator for rk3188

rk3188 pre-loader binaries are not managed in rkbin,
add them and make its version from v2.00.

Generate a rk3188 pre-loader:
tools/boot_merger --rc4 RKBOOT/RK3188MINIALL.ini

Change-Id: I38468662eddf0844ff7848ec035d802d5440b9f1
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

RKBOOT/RK3188MINIALL.ini

@@ -0,0 +1,19 @@
+[CHIP_NAME]
+NAME=RK31
+[VERSION]
+MAJOR=0
+MINOR=2
+[CODE471_OPTION]
+NUM=1
+Path1=bin/rk31/rk3188_ddr_v2.00.bin
+[CODE472_OPTION]
+NUM=1
+Path1=bin/rk31/rk3188_usbplug_v2.00.bin
+[LOADER_OPTION]
+NUM=2
+LOADER1=FlashData
+LOADER2=FlashBoot
+FlashData=bin/rk31/rk3188_ddr_v2.00.bin
+FlashBoot=bin/rk31/rk3188_miniloader_v2.00.bin
+[OUTPUT]
+PATH=rk3188_loader_v2.00.200.bin