m68k: atari - Rename "mfp" to "st_mfp"

http://kisskb.ellerman.id.au/kisskb/buildresult/72115/:
| net/mac80211/ieee80211_i.h:327: error: syntax error before 'volatile'
| net/mac80211/ieee80211_i.h:350: error: syntax error before '}' token
| net/mac80211/ieee80211_i.h:455: error: field 'sta' has incomplete type
| distcc[19430] ERROR: compile net/mac80211/main.c on sprygo/32 failed

This is caused by

| # define mfp ((*(volatile struct MFP*)MFP_BAS))

in arch/m68k/include/asm/atarihw.h, which conflicts with the new "mfp" enum in
net/mac80211/ieee80211_i.h.

Rename "mfp" to "st_mfp", as it's a way too generic name for a global #define.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/atafb.c b/drivers/video/atafb.c
index 8058572..018850c 100644
--- a/drivers/video/atafb.c
+++ b/drivers/video/atafb.c
@@ -841,7 +841,7 @@
 		tt_dmasnd.ctrl = DMASND_CTRL_OFF;
 		udelay(20);		/* wait a while for things to settle down */
 	}
-	mono_moni = (mfp.par_dt_reg & 0x80) == 0;
+	mono_moni = (st_mfp.par_dt_reg & 0x80) == 0;
 
 	tt_get_par(&par);
 	tt_encode_var(&atafb_predefined[0], &par);
@@ -2035,7 +2035,7 @@
 		tt_dmasnd.ctrl = DMASND_CTRL_OFF;
 		udelay(20);		/* wait a while for things to settle down */
 	}
-	mono_moni = (mfp.par_dt_reg & 0x80) == 0;
+	mono_moni = (st_mfp.par_dt_reg & 0x80) == 0;
 
 	stste_get_par(&par);
 	stste_encode_var(&atafb_predefined[0], &par);
@@ -2086,20 +2086,20 @@
 		return;
 	local_irq_save(flags);
 
-	mfp.tim_ct_b = 0x10;
-	mfp.active_edge |= 8;
-	mfp.tim_ct_b = 0;
-	mfp.tim_dt_b = 0xf0;
-	mfp.tim_ct_b = 8;
-	while (mfp.tim_dt_b > 1)	/* TOS does it this way, don't ask why */
+	st_mfp.tim_ct_b = 0x10;
+	st_mfp.active_edge |= 8;
+	st_mfp.tim_ct_b = 0;
+	st_mfp.tim_dt_b = 0xf0;
+	st_mfp.tim_ct_b = 8;
+	while (st_mfp.tim_dt_b > 1)	/* TOS does it this way, don't ask why */
 		;
-	new = mfp.tim_dt_b;
+	new = st_mfp.tim_dt_b;
 	do {
 		udelay(LINE_DELAY);
 		old = new;
-		new = mfp.tim_dt_b;
+		new = st_mfp.tim_dt_b;
 	} while (old != new);
-	mfp.tim_ct_b = 0x10;
+	st_mfp.tim_ct_b = 0x10;
 	udelay(SYNC_DELAY);
 
 	if (atari_switches & ATARI_SWITCH_OVSC_IKBD)