SPM : Arch: Update MSP resetting logic

VTOR MAY NOT exist in a particular platform, skip relying
on VTOR to get MSP initial value when resetting MSP.

Change-Id: I1010ba751b1d98cfe63b3f331b48ab5a2d9c93ae
Signed-off-by: Ken Liu <Ken.Liu@arm.com>
diff --git a/secure_fw/spm/include/tfm_arch.h b/secure_fw/spm/include/tfm_arch.h
index 70b21a6..a754d5f 100644
--- a/secure_fw/spm/include/tfm_arch.h
+++ b/secure_fw/spm/include/tfm_arch.h
@@ -132,7 +132,7 @@
  * It frees the stack used by SPM initialization and do Exception Return.
  * It does not return.
  */
-void tfm_arch_free_msp_and_exc_ret(uint32_t exc_return);
+void tfm_arch_free_msp_and_exc_ret(uint32_t msp_base, uint32_t exc_return);
 
 /*
  * This function sets return value on APIs that cause scheduling, for example