arch/risc-v/esp32c3: Use the same naming for the RTC heap as ESP32 for

consistency.

Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>

boards/risc-v/esp32c3/esp32c3-devkit/scripts/esp32c3.ld

@@ -250,7 +250,7 @@ SECTIONS
 
    /* Whatever is left from the RTC memory is used as a special heap. */
 
-    _srtc_heap = ABSOLUTE(.);
+    _srtcheap = ABSOLUTE(.);
 
   } >rtc_seg
 }

boards/risc-v/esp32c3/esp32c3-devkit/scripts/esp32c3.template.ld

@@ -91,4 +91,4 @@ MEMORY
 
 /* Mark the end of the RTC heap (top of the RTC region) */
 
-_ertc_heap = 0x50001fff;
+_ertcheap = 0x50001fff;