Update references to ARM Trusted Firmware

We must never abbreviate ARM so we either reference as "ARM
Trusted Firmware" or "ARM-TF".
Fix dirty tests

* Makes dirty tests work again
* Fixes compile issues when enabling the LOG features in dirty tests
Fix GCM Authentication

Authentication tag length, given during the enc_final(),
was wrong. It was the max of the tag buffer, instead of the
value provided during the init.

Other cleanup also takes place to simplify CCM authentication.

Change-Id: I14c02b2a39a51fb485b0ff04707895f91fcc73a3
Reviewed-on: https://gerrit.st.com/12369
Tested-by: Pascal BRAND <pascal.brand@st.com>
Tested-by: Jean-Michel DELORME <jean-michel.delorme@st.com>
Reviewed-by: Jean-Michel DELORME <jean-michel.delorme@st.com>
Signed-off-by: Pascal Brand <pascal.brand@st.com>
plat-vexpress: fix non-debug build

Fixes a number of build errors when 'PLATFORM=vexpress' and 'DEBUG=':
- '<var> may be used uninitialized'
- 'dereferencing type-punned pointer will break strict-aliasing rules'
This one is addressed by adding -fno-strict-aliasing to the cflags for the
problematic files, which is a temporary solution.
- 'inlining failed'

Also, make sure tee_svc_syscall_table is aligned on a 32-bit boundary.
Otherwise, an alignment fault might occur:
  ERR [0x0] TEE-CORE:tee_pager_print_error_abort:101: data-abort at 0x602f16b
  FSR 0x1 PC 0x6007bd4 TTBR0 0x603804A CONTEXIDR 0x1
  CPUID 0x80000001 DBGPCSR 0x0 CPSR 0x80000013 (read from SPSR)
  ERR [0x0] TEE-CORE:tee_pager_handle_abort:164: [TEE_PAGER] alignement fault!  (trap CPU)

Note: on Foundation_v8, I measured a ~3x speedup between debug and non-debug
builds for asymmetric crypto tests.