LPC55S69: Fix APB bridge security programming

Spotted in compiler warnings - code was trying to access a non-existent
second security control block, rather than access the settings for the
second APB bridge in the first and only security control block.

Author: kjbracey

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC55S69/TARGET_M33_S/target_cfg.c

@@ -347,7 +347,7 @@ void ppc_init_cfg(void)
 {
     /* Secure access to Flash controller in the PPC */
 
-    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[1].SEC_CTRL_APB_BRIDGE0_MEM_CTRL2 =
+    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[0].SEC_CTRL_APB_BRIDGE1_MEM_CTRL2 =
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL2_FLASH_CTRL_RULE(0x3U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL2_PRINCE_RULE(0x0U);
 
@@ -379,19 +379,19 @@ void ppc_init_cfg(void)
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE0_MEM_CTRL3_EZH_RULE(0x0U);
 
     /* APB settings for Bridge 1 */
-    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[1].SEC_CTRL_APB_BRIDGE0_MEM_CTRL0 =
+    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[0].SEC_CTRL_APB_BRIDGE1_MEM_CTRL0 =
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL0_PMC_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL0_PVT_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL0_SYSCTRL_RULE(0x0U);
 
-    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[1].SEC_CTRL_APB_BRIDGE0_MEM_CTRL1 =
+    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[0].SEC_CTRL_APB_BRIDGE1_MEM_CTRL1 =
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL1_CTIMER2_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL1_CTIMER3_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL1_CTIMER4_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL1_RTC_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL1_OSEVENT_RULE(0x0U);
 
-    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[1].SEC_CTRL_APB_BRIDGE0_MEM_CTRL3 =
+    AHB_SECURE_CTRL->SEC_CTRL_APB_BRIDGE[0].SEC_CTRL_APB_BRIDGE1_MEM_CTRL3 =
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL3_USBHPHY_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL3_RNG_RULE(0x0U) |
        AHB_SECURE_CTRL_SEC_CTRL_APB_BRIDGE_SEC_CTRL_APB_BRIDGE1_MEM_CTRL3_PUFF_RULE(0x0U) |