fix(rcar3): disable stack protector for functions in SRAM

Disable the BL31 stack protector for all functions placed in SRAM,
because the canary value in __stack_chk_guard in DRAM can not be
read whe

fix(rcar3): disable stack protector for functions in SRAM

Disable the BL31 stack protector for all functions placed in SRAM,
because the canary value in __stack_chk_guard in DRAM can not be
read when running Suspend To RAM code from SRAM. The SSP functions
in DRAM can also not be called from that code. Make sure the code
in SRAM is self-contained by marking rcar_pwrc_go_suspend_to_ram()
as noinline. To assure the stack protector is active otherwise,
use no_stack_protector function attribute for the select functions
which are placed in SRAM.

Change-Id: Idc43e70fd5217ea130a48c46f227a37c568dc8bd
Fixes: cfa466ab733f ("feat(rcar3): enable the stack protection")
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Signed-off-by: Dien Pham <dien.pham.ry@renesas.com>
Signed-off-by: Hieu Nguyen <hieu.nguyen.dn@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

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