spm-mm: fix MISRA C-2012 Rule 2.3 spm_mm_boot_info_t defined but never used.

Following merge of patchset [1] the spm_mm_boot_info_t structure is
included in few platform files unconditionally even when SPM_MM option
is disabled.

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/2647

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I68bc034c9348b5d9bcfd2e5217b781df5ad1b369

plat/arm/board/fvp/fvp_common.c

@@ -18,7 +18,10 @@
 #include <plat/arm/common/plat_arm.h>
 #include <plat/common/platform.h>
 #include <platform_def.h>
+
+#if SPM_MM
 #include <services/spm_mm_partition.h>
+#endif
 
 #include "fvp_private.h"
 

plat/arm/board/tc0/tc0_plat.c

@@ -15,7 +15,10 @@
 #include <plat/arm/common/plat_arm.h>
 #include <plat/common/platform.h>
 #include <drivers/arm/sbsa.h>
+
+#if SPM_MM
 #include <services/spm_mm_partition.h>
+#endif
 
 /*
  * Table of regions for different BL stages to map using the MMU.

plat/arm/css/sgi/sgi_plat.c

 /*
- * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -15,7 +15,10 @@
 #include <plat/common/platform.h>
 #include <drivers/arm/sbsa.h>
 #include <sgi_base_platform_def.h>
+
+#if SPM_MM
 #include <services/spm_mm_partition.h>
+#endif
 
 #define SGI_MAP_FLASH0_RO	MAP_REGION_FLAT(V2M_FLASH0_BASE,\
 						V2M_FLASH0_SIZE,	\