[PATCH] i2c: fix maximum address an I2C chip can assign

I2C bus support up to 128 devices (mask 0x7F), but current calypso driver is masked it to 64 (0x3F). I discover it because Motorola W220 has an I/O expander PCA9537 at address 0x49 which could be reached. Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com>