Work with pico-sdk 2

This is used in the philhower Arduino core version 4+.

Fixes #8

library.properties

@@ -1,5 +1,5 @@
 name=PicoDVI - Adafruit Fork
-version=1.1.0
+version=1.2.0
 author=Luke Wren (Wren6991)
 maintainer=Adafruit <info@adafruit.com>
 sentence=Arduino library for RP2040 DVI output, based on PicoDVI

src/libdvi/dvi.c

@@ -191,7 +191,11 @@ static void __dvi_func(dvi_dma_irq_handler)(struct dvi_inst *inst) {
 	// Make sure all three channels have definitely loaded their last block
 	// (should be within a few cycles of one another)
 	for (int i = 0; i < N_TMDS_LANES; ++i) {
+#if PICO_SDK_VERSION_MAJOR == 2
+		while (dma_debug_hw->ch[inst->dma_cfg[i].chan_data].dbg_tcr != inst->timing->h_active_pixels / DVI_SYMBOLS_PER_WORD)
+#else
 		while (dma_debug_hw->ch[inst->dma_cfg[i].chan_data].tcr != inst->timing->h_active_pixels / DVI_SYMBOLS_PER_WORD)
+#endif
 			tight_loop_contents();
 	}