esp32c3: Fix alignment of ram text (#759)

Author: Grazfather

port/espressif/esp/ld/esp32_c3/direct_boot_sections.ld

@@ -26,6 +26,7 @@ SECTIONS
     microzig_ram_text_end = .;
   } > IRAM
 
+  . = ALIGN(4);
   _iram_size = . - microzig_ram_text_start;
 
   _dram_start = ORIGIN(DRAM) + _iram_size;