hw/i386/pc: Remove 'host_type' argument from pc_init1()

All callers use host_type=TYPE_I440FX_PCI_HOST_BRIDGE.
Directly use this definition within pc_init1().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240301185936.95175-4-philmd@linaro.org>
1 file changed