ide-floppy: move /proc handling to ide-floppy_proc.c (take 2)

While at it:
- idefloppy_capacity() -> ide_floppy_capacity()
- idefloppy_proc[] -> ide_floppy_proc[]
- idefloppy_settings[] -> ide_floppy_settings[]

v2:
Build fix for CONFIG_IDE_PROC_FS=n from Elias Oltmanns.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-floppy.h

@@ -48,8 +48,15 @@ typedef struct ide_floppy_obj {
 /* ide-floppy.c */
 void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *, u8);
 void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *);
+sector_t ide_floppy_capacity(ide_drive_t *);
 
 /* ide-floppy_ioctl.c */
 int ide_floppy_ioctl(struct inode *, struct file *, unsigned, unsigned long);
 
+#ifdef CONFIG_IDE_PROC_FS
+/* ide-floppy_proc.c */
+extern ide_proc_entry_t ide_floppy_proc[];
+extern const struct ide_proc_devset ide_floppy_settings[];
+#endif
+
 #endif /*__IDE_FLOPPY_H */