hw/char: Introduce SH_SCI Kconfig entry

We want to be able to use the 'SH4' config for architecture
specific features. Add more fine-grained selection by adding
a CONFIG_SH_SCI selector for the SH4 serial controller.

Add the missing MAINTAINERS entries.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210222141514.2646278-5-f4bug@amsat.org>

MAINTAINERS

@@ -1397,6 +1397,7 @@ R2D
 M: Yoshinori Sato <ysato@users.sourceforge.jp>
 R: Magnus Damm <magnus.damm@gmail.com>
 S: Odd Fixes
+F: hw/char/sh_serial.c
 F: hw/sh4/r2d.c
 F: hw/intc/sh_intc.c
 F: include/hw/sh4/sh_intc.h
@@ -1405,6 +1406,7 @@ Shix
 M: Yoshinori Sato <ysato@users.sourceforge.jp>
 R: Magnus Damm <magnus.damm@gmail.com>
 S: Odd Fixes
+F: hw/char/sh_serial.c
 F: hw/sh4/shix.c
 F: hw/intc/sh_intc.c
 F: include/hw/sh4/sh_intc.h

hw/char/Kconfig

@@ -50,6 +50,9 @@ config SCLPCONSOLE
 config TERMINAL3270
     bool
 
+config SH_SCI
+    bool
+
 config RENESAS_SCI
     bool
 

hw/char/meson.build

@@ -31,7 +31,7 @@ softmmu_ss.add(when: 'CONFIG_OMAP', if_true: files('omap_uart.c'))
 softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_aux.c'))
 softmmu_ss.add(when: 'CONFIG_RENESAS_SCI', if_true: files('renesas_sci.c'))
 softmmu_ss.add(when: 'CONFIG_SIFIVE_UART', if_true: files('sifive_uart.c'))
-softmmu_ss.add(when: 'CONFIG_SH4', if_true: files('sh_serial.c'))
+softmmu_ss.add(when: 'CONFIG_SH_SCI', if_true: files('sh_serial.c'))
 softmmu_ss.add(when: 'CONFIG_STM32F2XX_USART', if_true: files('stm32f2xx_usart.c'))
 softmmu_ss.add(when: 'CONFIG_MCHP_PFSOC_MMUART', if_true: files('mchp_pfsoc_mmuart.c'))
 

hw/sh4/Kconfig

@@ -20,6 +20,7 @@ config SHIX
 config SH7750
     bool
     select SH_INTC
+    select SH_SCI
 
 config SH4
     bool