[enhancement] Consider supporting both AFE4400 and AFE4490 register maps/values via #def

[yashmulgaonkar]

The AFE4400 and AFE4490 have different setup register values since the 4400 is a feature subset of the 4490.
A good enhancement would be to have a #define for which chip to compile for and appropriately choose the correct register value set in

protocentral-afe4490-arduino/src/protocentral_afe44xx.cpp

Lines 117 to 153 in b3471f6

	afe44xxWrite(CONTROL0, 0x000000);
	afe44xxWrite(CONTROL0, 0x000008);
	afe44xxWrite(TIAGAIN, 0x000000); // CF = 5pF, RF = 500kR
	afe44xxWrite(TIA_AMB_GAIN, 0x000001);
	afe44xxWrite(LEDCNTRL, 0x001414);
	afe44xxWrite(CONTROL2, 0x000000); // LED_RANGE=100mA, LED=50mA
	afe44xxWrite(CONTROL1, 0x010707); // Timers ON, average 3 samples
	afe44xxWrite(PRPCOUNT, 0X001F3F);
	afe44xxWrite(LED2STC, 0X001770);
	afe44xxWrite(LED2ENDC, 0X001F3E);
	afe44xxWrite(LED2LEDSTC, 0X001770);
	afe44xxWrite(LED2LEDENDC, 0X001F3F);
	afe44xxWrite(ALED2STC, 0X000000);
	afe44xxWrite(ALED2ENDC, 0X0007CE);
	afe44xxWrite(LED2CONVST, 0X000002);
	afe44xxWrite(LED2CONVEND, 0X0007CF);
	afe44xxWrite(ALED2CONVST, 0X0007D2);
	afe44xxWrite(ALED2CONVEND, 0X000F9F);
	afe44xxWrite(LED1STC, 0X0007D0);
	afe44xxWrite(LED1ENDC, 0X000F9E);
	afe44xxWrite(LED1LEDSTC, 0X0007D0);
	afe44xxWrite(LED1LEDENDC, 0X000F9F);
	afe44xxWrite(ALED1STC, 0X000FA0);
	afe44xxWrite(ALED1ENDC, 0X00176E);
	afe44xxWrite(LED1CONVST, 0X000FA2);
	afe44xxWrite(LED1CONVEND, 0X00176F);
	afe44xxWrite(ALED1CONVST, 0X001772);
	afe44xxWrite(ALED1CONVEND, 0X001F3F);
	afe44xxWrite(ADCRSTCNT0, 0X000000);
	afe44xxWrite(ADCRSTENDCT0, 0X000000);
	afe44xxWrite(ADCRSTCNT1, 0X0007D0);
	afe44xxWrite(ADCRSTENDCT1, 0X0007D0);
	afe44xxWrite(ADCRSTCNT2, 0X000FA0);
	afe44xxWrite(ADCRSTENDCT2, 0X000FA0);
	afe44xxWrite(ADCRSTCNT3, 0X001770);
	afe44xxWrite(ADCRSTENDCT3, 0X001770);
	delay(1000);

Currently, the file is named as protocentral_afe44xx.cpp but contains invalid register values for the AFE4400.