platform: b_u585i_iot02a: demote provisioning logs from ERR to WARN

During the first boot, the auto-provisioning mechanism detects that
Option Bytes are in an open state (due to regression) and reconfigures
them to match the security policy.

These logs were previously marked as ERROR. However, since the system
successfully sets the correct values and continues the boot process
without exiting, they are more accurately described as WARNINGS.

Change-Id: I91da9bad1a03d35816a398cc68ef69f2509d8e80
Signed-off-by: Benjamin Grolleau <benjamin.grolleau@outlook.com>

Author: Grolleau-Benjamin

platform/ext/target/stm/common/stm32u5xx/bl2/low_level_security.c

@@ -672,7 +672,7 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for secure flash protection");
     Error_Handler();
 #else
-    BOOT_LOG_ERR("Unexpected value for secure flash protection: set wmsec1");
+    BOOT_LOG_WRN("Unexpected value for secure flash protection: set wmsec1");
     flash_option_bytes_bank1.WMSecStartPage = start;
     flash_option_bytes_bank1.WMSecEndPage = end;
     flash_option_bytes_bank1.OptionType |= OPTIONBYTE_WMSEC;
@@ -695,7 +695,7 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for secure flash protection");
     Error_Handler();
 #else
-    BOOT_LOG_ERR("Unexpected value for secure flash protection : set wmsec2");
+    BOOT_LOG_WRN("Unexpected value for secure flash protection : set wmsec2");
     flash_option_bytes_bank2.WMSecStartPage = start;
     flash_option_bytes_bank2.WMSecEndPage = end;
     flash_option_bytes_bank2.OptionType = OPTIONBYTE_WMSEC;
@@ -712,7 +712,7 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for secure flash protection");
     Error_Handler();
 #else
-    BOOT_LOG_ERR("Unexpected value for secure flash protection : set wmsec2");
+    BOOT_LOG_WRN("Unexpected value for secure flash protection : set wmsec2");
     /* bank is not unsecured , modify option bytes */
     flash_option_bytes_bank2.WMSecStartPage = 127;
     flash_option_bytes_bank2.WMSecEndPage = 0;
@@ -737,11 +737,10 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for write protection ");
     Error_Handler();
 #else
+    BOOT_LOG_WRN("Unexpected value for write protection : set wrp1");
     flash_option_bytes_bank1.WRPStartOffset = start;
     flash_option_bytes_bank1.WRPEndOffset = end;
     flash_option_bytes_bank1.WRPArea |= OB_WRPAREA_BANK1_AREAA;
-
-    BOOT_LOG_ERR("Unexpected value for write protection : set wrp1");
     flash_option_bytes_bank1.OptionType |= OPTIONBYTE_WRP;
 #endif /* TFM_ENABLE_SET_OB */
   }
@@ -770,11 +769,10 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for write protection ");
     Error_Handler();
 #else
+    BOOT_LOG_WRN("Unexpected value for write protection : set wrp2");
     flash_option_bytes_bank2.WRPStartOffset = start;
     flash_option_bytes_bank2.WRPEndOffset = end;
     flash_option_bytes_bank2.WRPArea |= OB_WRPAREA_BANK2_AREAA;
-
-    BOOT_LOG_ERR("Unexpected value for write protection : set wrp2");
     flash_option_bytes_bank2.OptionType |= OPTIONBYTE_WRP;
 #endif /* TFM_ENABLE_SET_OB */
   }
@@ -809,7 +807,7 @@ void LL_SECU_CheckStaticProtections(void)
     BOOT_LOG_ERR("Unexpected value for secure user flash protection");
     Error_Handler();
 #else
-    BOOT_LOG_ERR("Unexpected value for secure user flash protection : set hdp1");
+    BOOT_LOG_WRN("Unexpected value for secure user flash protection : set hdp1");
     flash_option_bytes_bank1.WMSecStartPage = start;
     flash_option_bytes_bank1.WMHDPEndPage = end;
     flash_option_bytes_bank1.OptionType |= OPTIONBYTE_WMSEC;