cmd: add a fetch utility

Add a small utility for displaying some information about U-Boot and the
hardware it's running on in a similar fashion to the popular neofetch
tool for Linux [1].

While the output is meant to be useful, it should also be pleasing to
look at and perhaps entertaining. The ufetch command aims to bring this
to U-Boot, featuring a colorful ASCII art version of the U-Boot logo.

[1]: https://en.wikipedia.org/wiki/Neofetch

Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # vim3
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8560-QRD
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Tony Dinh <mibodhi@gmail.com>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 8c6c0c2..ba31f86 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1736,6 +1736,11 @@
 T:	git https://source.denx.de/u-boot/custodians/u-boot-ubi.git
 F:	drivers/mtd/ubi/
 
+UFETCH
+M:	Caleb Connolly <caleb.connolly@linaro.org>
+S:	Maintained
+F:	cmd/ufetch.c
+
 UFS
 M:	Neil Armstrong <neil.armstrong@linaro.org>
 M:	Bhupesh Sharma <bhupesh.linux@gmail.com>