hw/intc/sh_intc: Rename iomem region

hw/intc/sh_intc: Rename iomem region

Rename the iomem region to "intc" from "interrupt-controller" which
makes the info mtree output less wide as it is already too wide
because of all the aliases. Also drop the format macro which was only
used twice in close proximity so we can just use the literal string
instead without a macro definition.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <cb6402dab6b44c804142b5cf9af68e6398cb613f.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>