drivers/sdcard: Fix bug in computing number of sectors on SD Card.

This was a typo from the very first commit of this file.

drivers/sdcard/sdcard.py

@@ -97,7 +97,7 @@ class SDCard:
         csd = bytearray(16)
         self.readinto(csd)
         if csd[0] & 0xc0 == 0x40: # CSD version 2.0
-            self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 2014
+            self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 1024
         elif csd[0] & 0xc0 == 0x00: # CSD version 1.0 (old, <=2GB)
             c_size = csd[6] & 0b11 | csd[7] << 2 | (csd[8] & 0b11000000) << 4
             c_size_mult = ((csd[9] & 0b11) << 1) | csd[10] >> 7