fdts: stm32mp15-bl2: delete nodes for non used boot devices

Cleanup the BL2 device tree file by removing the nodes for the devices
that are not used to boot, depending on compilation flags.
In SDMMC boot, the gain for the dtb file is about 2.3kB.

Change-Id: I3ba13e06dd22b52cff96f51db2dac94b532c81ae
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/188778


Reviewed-by: CITOOLS <MDG-smet-aci-reviews@list.st.com>
Reviewed-by: CIBUILD <MDG-smet-aci-builds@list.st.com>
Reviewed-by: Lionel DEBIEVE <lionel.debieve@st.com>
Tested-by: Lionel DEBIEVE <lionel.debieve@st.com>

fdts/stm32mp15-bl2.dtsi

@@ -4,6 +4,12 @@
  */
 
 / {
+#if !(STM32MP_EMMC || STM32MP_SDMMC)
+	aliases {
+		/delete-property/ mmc0;
+	};
+#endif
+
 	cpus {
 		/delete-node/ cpu@1;
 	};
@@ -22,9 +28,42 @@
 		/delete-node/ stgen@5c008000;
 		/delete-node/ i2c@5c009000;
 		/delete-node/ tamp@5c00a000;
+#if !(STM32MP_EMMC || STM32MP_SDMMC)
+		/delete-node/ sdmmc@58005000;
+		/delete-node/ sdmmc@58007000;
+#endif
+#if !STM32MP_RAW_NAND
+		/delete-node/ memory-controller@58002000;
+#endif
+#if !(STM32MP_SPI_NAND || STM32MP_SPI_NOR)
+		/delete-node/ spi@58003000;
+#endif
+#if !STM32MP_USB_PROGRAMMER
+		/delete-node/ usb-otg@49000000;
+		/delete-node/ usbphyc@5a006000;
+#endif
 
 		pin-controller@50002000 {
 			/delete-node/ rtc-out2-rmp-pins-0;
+#if !(STM32MP_EMMC || STM32MP_SDMMC)
+			/delete-node/ sdmmc1-b4-0;
+			/delete-node/ sdmmc1-dir-0;
+			/delete-node/ sdmmc2-b4-0;
+			/delete-node/ sdmmc2-b4-1;
+			/delete-node/ sdmmc2-d47-0;
+#endif
+#if !STM32MP_RAW_NAND
+			/delete-node/ fmc-0;
+#endif
+#if !(STM32MP_SPI_NAND || STM32MP_SPI_NOR)
+			/delete-node/ qspi-clk-0;
+			/delete-node/ qspi-bk1-0;
+			/delete-node/ qspi-bk2-0;
+#endif
+#if !STM32MP_USB_PROGRAMMER
+			/delete-node/ usbotg_hs-0;
+			/delete-node/ usbotg-fs-dp-dm-0;
+#endif
 		};
 	};