staging: pi433: fix CamelCase for Ohm identifiers

Fixes checkpatch warnings:

  CHECK: Avoid CamelCase: <fiftyOhm>
  CHECK: Avoid CamelCase: <twohundretOhm>
Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/Documentation/pi433.txt

@@ -194,8 +194,8 @@ rf params:
 		step_6_0db	- increase in 6 db steps
 	antenna_impedance
 		sets the electrical adoption of the antenna
-		fiftyOhm	- for antennas with an impedance of 50Ohm
-		twohundretOhm	- for antennas with an impedance of 200Ohm
+		fifty_ohm	- for antennas with an impedance of 50Ohm
+		two_hundred_ohm	- for antennas with an impedance of 200Ohm
 	lnaGain
 		sets the gain of the low noise amp
 		automatic	- lna gain is determined by an agc

drivers/staging/pi433/pi433_if.c

@@ -1183,7 +1183,7 @@ static int pi433_probe(struct spi_device *spi)
 	retval = rf69_set_output_power_level(spi, 13);
 	if (retval < 0)
 		goto minor_failed;
-	retval = rf69_set_antenna_impedance(spi, fiftyOhm);
+	retval = rf69_set_antenna_impedance(spi, fifty_ohm);
 	if (retval < 0)
 		goto minor_failed;
 

drivers/staging/pi433/rf69.c

@@ -389,9 +389,9 @@ int rf69_set_pa_ramp(struct spi_device *spi, enum paRamp paRamp)
 int rf69_set_antenna_impedance(struct spi_device *spi, enum antenna_impedance antenna_impedance)
 {
 	switch (antenna_impedance) {
-	case fiftyOhm:
+	case fifty_ohm:
 		return rf69_clear_bit(spi, REG_LNA, MASK_LNA_ZIN);
-	case twohundretOhm:
+	case two_hundred_ohm:
 		return rf69_set_bit(spi, REG_LNA, MASK_LNA_ZIN);
 	default:
 		dev_dbg(&spi->dev, "set: illegal input param");

drivers/staging/pi433/rf69_enum.h

@@ -61,8 +61,8 @@ enum paRamp {
 };
 
 enum antenna_impedance {
-	fiftyOhm,
-	twohundretOhm
+	fifty_ohm,
+	two_hundred_ohm
 };
 
 enum lnaGain {