spi: altera: Clean up bit definitions

spi: altera: Clean up bit definitions

Clean up the definitions of bits in the Altera SPI driver, there
is no need to put braces around numbers afterall. No functional
change.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Chin Liang See <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Albert Aribaud <[email protected]>
Cc: Pavel Machek <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Reviewed-by: Jagannadha Sutradharudu Teki <[email protected]>