README.OE-Core/README.qemu: Move to markdown format

The READMEs are often viewed from websites so switch to markdown format which is
much as readable as text and much better from html in broswers.

(From OE-Core rev: a9f366a883e4a5dcc364ca2841615c5acc494439)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/README.qemu.md b/README.qemu.md
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+QEMU Emulation Targets
+======================
+
+To simplify development, the build system supports building images to
+work with the QEMU emulator in system emulation mode. Several architectures
+are currently supported in 32 and 64 bit variants:
+
+  * ARM (qemuarm + qemuarm64)
+  * x86 (qemux86 + qemux86-64)
+  * PowerPC (qemuppc only)
+  * MIPS (qemumips + qemumips64)
+
+Use of the QEMU images is covered in the Yocto Project Reference Manual.
+The appropriate MACHINE variable value corresponding to the target is given
+in brackets.