staging: pi433: fix CamelCase for maxMinus variables

Fixes checkpatch warnings:

  CHECK: Avoid CamelCase: <maxMinus12>
  CHECK: Avoid CamelCase: <maxMinus24>
  CHECK: Avoid CamelCase: <maxMinus36>
  CHECK: Avoid CamelCase: <maxMinus48>
  CHECK: Avoid CamelCase: <maxMinus6>
Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/Documentation/pi433.txt

@@ -200,11 +200,11 @@ rf params:
 		sets the gain of the low noise amp
 		automatic	- lna gain is determined by an agc
 		max		- lna gain is set to maximum
-		maxMinus6	- lna gain is set to  6db below max
-		maxMinus12	- lna gain is set to 12db below max
-		maxMinus24	- lna gain is set to 24db below max
-		maxMinus36	- lna gain is set to 36db below max
-		maxMinus48	- lna gain is set to 48db below max
+		max_minus_6	- lna gain is set to  6db below max
+		max_minus_12	- lna gain is set to 12db below max
+		max_minus_24	- lna gain is set to 24db below max
+		max_minus_36	- lna gain is set to 36db below max
+		max_minus_48	- lna gain is set to 48db below max
 	bw_mantisse
 		sets the bandwidth of the channel filter - part one: mantisse.
 		mantisse16	- mantisse is set to 16

drivers/staging/pi433/rf69.c

@@ -367,13 +367,13 @@ int rf69_set_antenna_impedance(struct spi_device *spi, enum antennaImpedance ant
 int rf69_set_lna_gain(struct spi_device *spi, enum lnaGain lnaGain)
 {
 	switch (lnaGain) {
-	case automatic:	 return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_AUTO);
-	case max:	 return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX);
-	case maxMinus6:  return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_6);
-	case maxMinus12: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_12);
-	case maxMinus24: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_24);
-	case maxMinus36: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_36);
-	case maxMinus48: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_48);
+	case automatic:	   return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_AUTO);
+	case max:	   return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX);
+	case max_minus_6:  return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_6);
+	case max_minus_12: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_12);
+	case max_minus_24: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_24);
+	case max_minus_36: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_36);
+	case max_minus_48: return rf69_read_mod_write(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_48);
 	default:
 		dev_dbg(&spi->dev, "set: illegal input param");
 		return -EINVAL;

drivers/staging/pi433/rf69_enum.h

@@ -68,11 +68,11 @@ enum antennaImpedance {
 enum lnaGain {
 	automatic,
 	max,
-	maxMinus6,
-	maxMinus12,
-	maxMinus24,
-	maxMinus36,
-	maxMinus48,
+	max_minus_6,
+	max_minus_12,
+	max_minus_24,
+	max_minus_36,
+	max_minus_48,
 	undefined
 };