bsps/shared: Adapt fsl-edma driver for imxrt

Note: The changes have been done with portability in mind. The driver
should (in theory) be able to replace the original one in the MPC BSPs
too. For full compatibility an adaption layer and especially a test
would be necessary. Because both are missing, don't integrate it into
the MPC BSP now.

Update #4180

spec/build/bsps/arm/imxrt/bspimxrt.yml

@@ -118,6 +118,8 @@ links:
   uid: ../../optconsolebaud
 - role: build-dependency
   uid: ../../optconsoleirq
+- role: build-dependency
+  uid: optfsledmaemlm
 - role: build-dependency
   uid: optlinkcmds
 - role: build-dependency

spec/build/bsps/arm/imxrt/optfsledmaemlm.yml

@@ -0,0 +1,16 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+default: true
+default-by-variant: []
+description: |
+  Enable the minor loop mapping of the Freescale EDMA.
+enabled-by: true
+format: '{}'
+links: []
+name: BSP_FSL_EDMA_EMLM
+type: build

spec/build/bsps/obj.yml

@@ -28,6 +28,10 @@ install:
   source:
   - bsps/include/ofw/ofw.h
   - bsps/include/ofw/ofw_compat.h
+- destination: ${BSP_INCLUDEDIR}/fsl
+  source:
+  - bsps/include/fsl/edma.h
+  - bsps/include/fsl/regs-edma.h
 - destination: ${BSP_INCLUDEDIR}/libchip
   source:
   - bsps/include/libchip/ata.h
@@ -72,6 +76,7 @@ links:
 source:
 - bsps/shared/dev/display/disp_hcms29xx.c
 - bsps/shared/dev/display/font_hcms29xx.c
+- bsps/shared/dev/dma/fsl-edma.c
 - bsps/shared/dev/i2c/i2c-2b-eeprom.c
 - bsps/shared/dev/i2c/i2c-ds1621.c
 - bsps/shared/dev/i2c/i2c-sc620.c