Move ParallelIOArg from qemu-common.h to sysemu/char.h

ParallelIOArg is shared between just qemu-char.c and
hw/char/parallel.c, and as such has no business in qemu-common.h.
Move it to sysemu/char.h.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/qemu-common.h

@@ -294,11 +294,6 @@ int qemu_openpty_raw(int *aslave, char *pty_name);
     sendto(sockfd, buf, len, flags, destaddr, addrlen)
 #endif
 
-struct ParallelIOArg {
-    void *buffer;
-    int count;
-};
-
 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 
 void tcg_exec_init(unsigned long tb_size);

include/sysemu/char.h

@@ -41,6 +41,11 @@ typedef struct {
 #define CHR_IOCTL_PP_EPP_WRITE       11
 #define CHR_IOCTL_PP_DATA_DIR        12
 
+struct ParallelIOArg {
+    void *buffer;
+    int count;
+};
+
 #define CHR_IOCTL_SERIAL_SET_TIOCM   13
 #define CHR_IOCTL_SERIAL_GET_TIOCM   14