Add ARC700 support in Hello project

17:41:08 **** Build of configuration Debug for project 700 ****
make all
Building file: ../src/700.c
Invoking: ARC ELF32 GCC C Compiler
arc-elf32-gcc -O0 -Wall -Wa,-adhlns="src/700.o.lst" -c -fmessage-length=0 -MMD -MP -MF"src/700.d" -MT"src/700.d" -mA7 -mlittle-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "src/700.o" "../src/700.c"
Finished building: ../src/700.c

Building file: ../src/crt0.S
Invoking: ARC ELF32 GCC Assembler
arc-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" -mA7 -mlittle-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "src/crt0.o" "../src/crt0.S"
Finished building: ../src/crt0.S

Building target: 700.elf
Invoking: ARC ELF32 GCC C Linker
arc-elf32-gcc -T"C:\Users\yunluz\runtime-EclipseApplication\700/lds/arcelf.lds" -nostartfiles -Wl,-Map,700.map -mA7 -mlittle-endian -g3 -gdwarf-2 -mbarrel-shifter -mnorm -mshift-assist -o "700.elf"  ./src/700.o ./src/crt0.o
Finished building target: 700.elf

Invoking: ARC ELF32 GNU Print Size
arc-elf32-size  --format=berkeley 700.elf
   text	   data	    bss	    dec	    hex	filename
    928	      0	  18432	  19360	   4ba0	700.elf
Finished building: 700.siz

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