MFC: r287013 (partial), r294616, r314097 (partial)

- Allow overriding the FDT slicer with a custom slicer.
- Teach the flashmap code about SPI flash.
- Allow different slicers for different flash types to be registered
  with geom_flashmap(4) and teach it about MMC for slicing enhanced
  user data area partitions. The FDT slicer still is the default for
  CFI, NAND and SPI flash on FDT-enabled platforms.
- In addition to a device_t, also pass the name of the GEOM provider
  in question to the slicers as a single device may provide more than
  one provider.
- Build a geom_flashmap.ko.
- Use MODULE_VERSION() so other modules can depend on geom_flashmap(4).
- Remove redundant/superfluous GEOM routines that either do nothing
  or provide/just call default GEOM (slice) functionality.
- Trim/adjust includes

2 files changed, 9 insertions, 0 deletions

diff --git a/sys/modules/geom/Makefile b/sys/modules/geom/Makefile
index f803af0..37ee422 100644
--- a/sys/modules/geom/Makefile
+++ b/sys/modules/geom/Makefile
@@ -7,6 +7,7 @@ SUBDIR=	geom_bde \
 	geom_cache \
 	geom_concat \
 	geom_eli \
+	geom_flashmap \
 	geom_fox \
 	geom_gate \
 	geom_journal \
diff --git a/sys/modules/geom/geom_flashmap/Makefile b/sys/modules/geom/geom_flashmap/Makefile
new file mode 100644
index 0000000..d475860
--- /dev/null
+++ b/sys/modules/geom/geom_flashmap/Makefile
@@ -0,0 +1,8 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../../geom
+
+KMOD=	geom_flashmap
+SRCS=	geom_flashmap.c
+
+.include <bsd.kmod.mk>