libgcc: Place assembly functions (including __xtensa_libgcc_window_spill) in IRAM

components/esp32/ld/esp32.common.ld

@@ -94,6 +94,7 @@ SECTIONS
     *librtc.a:(.literal .text .literal.* .text.*)
     *libsoc.a:(.literal .text .literal.* .text.*)
     *libhal.a:(.literal .text .literal.* .text.*)
+    *libgcc.a:lib2funcs.o(.literal .text .literal.* .text.*)
     *libspi_flash.a:spi_flash_rom_patch.o(.literal .text .literal.* .text.*)
     _iram_text_end = ABSOLUTE(.);
   } > iram0_0_seg