Platform: Add secure part section tag for data

This patch adds secure partition section tags. Those tags can be used
to place data, which is not located in the service folder, in the
secure partition area.

Change-Id: I6868376aed8e53f125d305600a82e6395f3dede4
Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
diff --git a/platform/include/tfm_platform_system.h b/platform/include/tfm_platform_system.h
index 8ad22b1..c248fe5 100644
--- a/platform/include/tfm_platform_system.h
+++ b/platform/include/tfm_platform_system.h
@@ -25,7 +25,7 @@
  *
  * \details Requests a system reset to reset the MCU.
  */
-TFM_LINK_SET_OBJECT_IN_PARTITION_SECTION("TFM_SP_PLATFORM")
+TFM_LINK_SET_RO_IN_PARTITION_SECTION("TFM_SP_PLATFORM")
 void tfm_platform_hal_system_reset(void);
 
 /*!
@@ -38,7 +38,7 @@
  *
  * \return Returns values as specified by the \ref tfm_platform_err_t
  */
-TFM_LINK_SET_OBJECT_IN_PARTITION_SECTION("TFM_SP_PLATFORM")
+TFM_LINK_SET_RO_IN_PARTITION_SECTION("TFM_SP_PLATFORM")
 enum tfm_platform_err_t tfm_platform_hal_ioctl(tfm_platform_ioctl_req_t request,
                                                psa_invec *in_vec,
                                                psa_outvec *out_vec);