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This flag warns if anything is declared more than once in the same
scope, even in cases where multiple declaration is valid and changes
nothing.

Consequently, this patch also fixes the issues reported by this
flag. Consider the following two lines of code from two different source
files(bl_common.h and bl31_plat_setup.c):

IMPORT_SYM(uintptr_t, __RO_START__, BL_CODE_BASE);
IMPORT_SYM(unsigned long, __RO_START__, BL2_RO_BASE);

The IMPORT_SYM macro which actually imports a linker symbol as a C expression.
The macro defines the __RO_START__ as an extern variable twice, one for each
instance. __RO_START__ symbol is defined by the linker script to mark the start
of the Read-Only area of the memory map.

Essentially, the platform code redefines the linker symbol with a different
(relevant) name rather than using the standard symbol. A simple solution to
fix this issue in the platform code for redundant declarations warning is
to remove the second IMPORT_SYM and replace it with following assignment

static const unsigned long BL2_RO_BASE = BL_CODE_BASE;

Change-Id: If4835d1ee462d52b75e5afd2a59b64828707c5aa
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>

STM32MP1 platform is able to boot from SPI-NOR devices.
These modifications add this support using the new
SPI-NOR framework.

Change-Id: I75ff9eba4661f9fb87ce24ced2bacbf8558ebe44
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

STM32MP1 platform is able to boot from SPI-NAND devices.
These modifications add this support using the new
SPI-NAND framework.

Change-Id: I0d5448bdc4bde153c1209e8043846c0f935ae5ba
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

STM32MP1 platform is able to boot from raw NAND devices.
These modifications add this support using the new
raw NAND framework.

Change-Id: I9e9c2b03930f98a5ac23f2b6b41945bef43e5043
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>