pbio/drv/block_device_ev3: Fix RX DMA channel.

Fix a typo where the RX channel for the wrong SPI peripheral was
requested. Likely we didn't notice this because everything should
already be set up correctly by the bootloader since it also uses
this SPI for flash memory.

Author: dlech

lib/pbio/drv/block_device/block_device_ev3.c

@@ -243,7 +243,7 @@ static void spi_bus_init(void) {
 
     // Request DMA channels. This only needs to be done for the initial events (and not for linked parameter sets)
     EDMA3RequestChannel(SOC_EDMA30CC_0_REGS, EDMA3_CHANNEL_TYPE_DMA, EDMA3_CHA_SPI0_TX, EDMA3_CHA_SPI0_TX, 0);
-    EDMA3RequestChannel(SOC_EDMA30CC_0_REGS, EDMA3_CHANNEL_TYPE_DMA, EDMA3_CHA_SPI1_RX, EDMA3_CHA_SPI1_RX, 0);
+    EDMA3RequestChannel(SOC_EDMA30CC_0_REGS, EDMA3_CHANNEL_TYPE_DMA, EDMA3_CHA_SPI0_RX, EDMA3_CHA_SPI0_RX, 0);
 
     // Enable!
     SPIEnable(SOC_SPI_0_REGS);