Add test case for SMCCC_ARCH_SOC_ID feature

Added test case for "SMCCC_ARCH_SOC_ID" SMC call.
This SMC call is used to retrieve SOC version and SOC revision

Test execution output is as below:

> Executing 'SMCCC_ARCH_SOC_ID test'
  TEST COMPLETE                                                 Passed
SOC Rev is not implemented
SOC Ver = 0x43b0000

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I48668ce22bb5d5767dadb42ce9526d77fd916bed
5 files changed