Add ARC600 toolchain to big endian on Windows

16:31:29 **** Build of configuration Debug for project 600 ****
make all
Building file: ../src/600.c
Invoking: ARC Windows GCC C Compiler
arceb-elf32-gcc -O0 -Wall -Wa,-adhlns="src/600.o.lst" -c -fmessage-length=0 -MMD -MP -MF"src/600.d" -MT"src/600.d" -mA6 -mbig-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "src/600.o" "../src/600.c"
Finished building: ../src/600.c

Building file: ../src/crt0.S
Invoking: ARC Windows GCC Assembler
arceb-elf32-gcc -x assembler-with-cpp -Wall -Wa,-adhlns="src/crt0.o.lst" -c -fmessage-length=0 -MMD -MP -MF"src/crt0.d" -MT"src/crt0.d" -mA6 -mbig-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "src/crt0.o" "../src/crt0.S"
Finished building: ../src/crt0.S

Building target: 600.elf
Invoking: ARC Windows GCC C Linker
arceb-elf32-gcc -T"C:\Users\yunluz\runtime-EclipseApplication\600/lds/arcelf.lds" -nostartfiles -Wl,-Map,600.map -mA6 -mbig-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "600.elf"  ./src/600.o ./src/crt0.o
Finished building target: 600.elf

Invoking: ARC Windows GNU Print Size
arceb-elf32-size  --format=berkeley 600.elf
   text	   data	    bss	    dec	    hex	filename
    908	      0	  18432	  19340	   4b8c	600.elf
Finished building: 600.siz

16:31:30 Build Finished (took 1s.8ms)

Signed-off-by: Yunlu Zhang <Yunlu.Zhang@synopsys.com>