hw/hw.h: Add include of qemu-log.h Add an include of qemu-log.h to hw.h, so that device model code has access to these logging functions without the need to directly include qemu-log.h. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>