Change-Id: I0837d787837a40a724a8b7f2e3abd82287f403f3

Instead of using the read_mpidr() helper functions to read the
MPIDR_EL1 system register, assembler coded functions should
use MRS/MSR instructions. This results in faster and more
compact code.

Change-Id: I42bb61a926113c4f80aa1ce72ee29ab26cd8fa43

This is a miscellaneous commit that fixes all build
errors introduced by the rebase of the Juno codebase
on the latest trusted firmware.

 - Make codebase consistent in its use of #include "" syntax
   for user includes and #include <> syntax for system includes.

 - Sort header files alphabetically

 - Use tag names for structure types.
   Replace instances of the former io_handle and io_dev_handle
   types with uintptr_t.

 - Review the .c and .S files for which header files really need
   including and reorder the #include statements alphabetically.

Change-Id: I1d409fafb6dc257a38992ee15b22b0e890d040b0

This extends the --gc-sections behaviour to the Juno-specific assembler
support functions in the firmware images by placing each function
into its own code section. This is achieved by using the 'func'
macro when declaring a function label.

Change-Id: I738370c0515face104531ab7944cc5bbdad49a9d

Note, on Juno mailboxes are 16 bytes because any bigger and they would
overlap the memory used for MHU payload data for SCP->AP transfers.

Signed-off-by: Jon Medhurst <tixy@linaro.org>

Signed-off-by: Jon Medhurst <tixy@linaro.org>