avr: Fix AVR build [PR71934]

On Mon, Dec 06, 2021 at 11:00:30AM +0100, Martin Liška wrote:
> Jakub, I think the patch broke avr-linux target:
>
> g++  -fno-PIE -c   -g   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-erro
> /home/marxin/Programming/gcc/gcc/config/avr/avr.c: In function ‘void avr_output_data_section_asm_op(const void*)’:
> /home/marxin/Programming/gcc/gcc/config/avr/avr.c:10097:26: error: invalid conversion from ‘const void*’ to ‘const char*’ [-fpermissive]

This patch fixes that.

2021-12-06  Jakub Jelinek  <jakub@redhat.com>

	PR pch/71934
	* config/avr/avr.c (avr_output_data_section_asm_op,
	avr_output_bss_section_asm_op): Change argument type from const void *
	to const char *.