do not pretend to support low voltage operation

Eliminate "mmc0: SD card claims to support the incompletely defined 'low voltage
range'. This will be ignored." warning. Qemu says the card is a SD card, and SD
spec doesn't define low-voltage cards, so do now pretend to be one.
Signed-off-by: NRiku Voipio <riku.voipio@iki.fi>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6772 c046a42c-6fe2-441c-8c8c-71466251a162

hw/sd.c

@@ -195,7 +195,7 @@ static uint16_t sd_crc16(void *message, size_t width)
 static void sd_set_ocr(SDState *sd)
 {
     /* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
-    sd->ocr = 0x80ffff80;
+    sd->ocr = 0x80ffff00;
 }
 
 static void sd_set_scr(SDState *sd)