fix(heap): MALLOC_CAP_EXEC does not allocate in RTC IRAM

This commit fixes the issue when trying to allocate memory
with the MALLOC_CAP_EXEC in RTC memory. Prior to the fix,
the heap allocator was returning an address in RTC DRAM.

To fix this issue:
- modified memory_layout.c of the concerned targets to fill the iram_address
field in the rtc entry of the soc_memory_region array properly.
- modified heap component  related functions to return IRAM address when
an allocation in RTC memory with MALLOC_CAP_EXEC is requested.

Closes https://github.com/espressif/esp-idf/issues/14835

components/bootloader_support/include/bootloader_memory_utils.h

@@ -28,7 +28,12 @@ extern "C" {
  */
 __attribute__((always_inline))
 inline static bool esp_dram_match_iram(void) {
-    return (SOC_DRAM_LOW == SOC_IRAM_LOW && SOC_DRAM_HIGH == SOC_IRAM_HIGH);
+    bool dram_match_iram = (SOC_DRAM_LOW == SOC_IRAM_LOW) &&
+                             (SOC_DRAM_HIGH == SOC_IRAM_HIGH);
+#if SOC_RTC_FAST_MEM_SUPPORTED
+        dram_match_iram &= (SOC_RTC_IRAM_LOW == SOC_RTC_DRAM_LOW);
+#endif
+    return dram_match_iram;
 }
 
 /**
@@ -97,7 +102,7 @@ inline static bool esp_ptr_in_diram_iram(const void *p) {
  */
 __attribute__((always_inline))
 inline static bool esp_ptr_in_rtc_iram_fast(const void *p) {
-#if SOC_RTC_FAST_MEM_SUPPORTED
+#if SOC_RTC_FAST_MEM_SUPPORTED && (SOC_RTC_IRAM_LOW != SOC_RTC_DRAM_LOW)
     return ((intptr_t)p >= SOC_RTC_IRAM_LOW && (intptr_t)p < SOC_RTC_IRAM_HIGH);
 #else
     return false;
@@ -151,6 +156,21 @@ inline static void * esp_ptr_diram_dram_to_iram(const void *p) {
 #endif
 }
 
+/* Convert a RTC DRAM pointer to equivalent word address in RTC IRAM
+
+   - Address must be word aligned
+   - Address must pass esp_ptr_in_rtc_dram_fast() test, or result will be invalid pointer
+*/
+__attribute__((always_inline))
+inline static void * esp_ptr_rtc_dram_to_iram(const void *p) {
+    intptr_t ptr = (intptr_t)p;
+#if SOC_RTC_FAST_MEM_SUPPORTED && (SOC_RTC_IRAM_LOW != SOC_RTC_DRAM_LOW)
+    return (void *) ( SOC_RTC_IRAM_LOW + (ptr - SOC_RTC_DRAM_LOW) );
+#else
+    return (void *) ptr;
+#endif
+}
+
 /* Convert a D/IRAM IRAM pointer to equivalent word address in DRAM
 
    - Address must be word aligned