m68k/atari: Move declaration of atari_SCC_reset_done to header file

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/include/asm/atarihw.h

@@ -30,6 +30,8 @@ extern u_long atari_switches;
 extern int atari_rtc_year_offset;
 extern int atari_dont_touch_floppy_select;
 
+extern int atari_SCC_reset_done;
+
 /* convenience macros for testing machine type */
 #define MACH_IS_ST	((atari_mch_cookie >> 16) == ATARI_MCH_ST)
 #define MACH_IS_STE	((atari_mch_cookie >> 16) == ATARI_MCH_STE && \