Add 'regular-pi1' to --led-gpio-mapping choices in Python binding (#1267

)

see: #1266

bindings/python/samples/samplebase.py

@@ -17,7 +17,7 @@ def __init__(self, *args, **kwargs):
         self.parser.add_argument("-P", "--led-parallel", action="store", help="For Plus-models or RPi2: parallel chains. 1..3. Default: 1", default=1, type=int)
         self.parser.add_argument("-p", "--led-pwm-bits", action="store", help="Bits used for PWM. Something between 1..11. Default: 11", default=11, type=int)
         self.parser.add_argument("-b", "--led-brightness", action="store", help="Sets brightness level. Default: 100. Range: 1..100", default=100, type=int)
-        self.parser.add_argument("-m", "--led-gpio-mapping", help="Hardware Mapping: regular, adafruit-hat, adafruit-hat-pwm" , choices=['regular', 'adafruit-hat', 'adafruit-hat-pwm'], type=str)
+        self.parser.add_argument("-m", "--led-gpio-mapping", help="Hardware Mapping: regular, adafruit-hat, adafruit-hat-pwm" , choices=['regular', 'regular-pi1', 'adafruit-hat', 'adafruit-hat-pwm'], type=str)
         self.parser.add_argument("--led-scan-mode", action="store", help="Progressive or interlaced scan. 0 Progressive, 1 Interlaced (default)", default=1, choices=range(2), type=int)
         self.parser.add_argument("--led-pwm-lsb-nanoseconds", action="store", help="Base time-unit for the on-time in the lowest significant bit in nanoseconds. Default: 130", default=130, type=int)
         self.parser.add_argument("--led-show-refresh", action="store_true", help="Shows the current refresh rate of the LED panel")