[l3gd20] Add support for L3G4200D chip

The L3G4200D chip is very similar to the L3GD20[H] parts and can use
the same driver with minor adjustments.  There are four differences:
 * WHO_AM_I register is 0xD3 (not 0xD4 or 0xD7):
   - added an extra case to the driver probe
 * Sampling rates are marginally different:
   - setting sampling rate now depends on the detected chip
 * I2C address range is different:
   - no changes as the driver doesn't support i2c access
 * the L3G4200D has a self-test function:
   - no changes---chose not to implement feature in driver

Signed-off-by: Ash Charles <ashcharles@gmail.com>

0 files changed, 0 insertions, 0 deletions