[bsp][esp32-c3] match IRAM wildcards on Windows paths

[cms19859230182-lang]

Summary

• ESP32-C3 sections.ld wildcards used /, so Windows object paths missed riscv\interrupt.o.
• _global_interrupt_handler stayed in flash. The vector JAL could not reach it (relocation truncated to fit: R_RISCV_JAL).
• Directory separators inside those wildcards are now ?, which matches both / and \. Comments are unchanged.
• The three bt globs are *bt[/\\]* instead. A bare ? also matches libbtdm.
• Same linker script as [bsp][ESP32_C3] match Windows GNU ld object paths in IRAM globs #11816, redone on current master.

Test plan

• ESP32-C3 default config, Windows, GCC 11.2.0: scons exit 0. rtthread.bin is 463568 bytes, text is 389484. _global_interrupt_handler is at 0x40388efc in iram0_0_seg. BSP_USING_GPIO and BSP_USING_UART stay on. SPI stays off.
• Same tree with RT_USING_SPI, BSP_USING_SPI and BSP_USING_SPI2 added: scons exit 0. rtthread.bin is 487280 bytes. The link includes drv_spi.o. spi_bus_initialize is passed SPI_DMA_CH_AUTO (3). Restoring rtconfig.h returns the 463568-byte image.
• After the bt glob change, the default image was linked again: still 463568 bytes, text 389484, handler still at 0x40388efc.
• ESP32-C6 default image is still 445408 bytes. With SPI selected it is still 466400 bytes, text 371334.
• Not flashed.

[github-actions]

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[github-actions]

MemBrowse Memory Report

No memory changes detected for:

• esp32-c3