arch/Config.in.sh: move BR2_ARCH_HAS_MMU_MANDATORY one level up

Now that all SuperH cores have an MMU, and must use it, move back the
select BR2_ARCH_HAS_MMU_MANDATORY one level up.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

arch/Config.in

@@ -228,6 +228,7 @@ config BR2_s390x
 
 config BR2_sh
 	bool "SuperH"
+	select BR2_ARCH_HAS_MMU_MANDATORY
 	help
 	  SuperH (or SH) is a 32-bit reduced instruction set computer
 	  (RISC) instruction set architecture (ISA) developed by

arch/Config.in.sh

@@ -7,16 +7,12 @@ choice
 
 config BR2_sh4
 	bool "sh4 (SH4 little endian)"
-	select BR2_ARCH_HAS_MMU_MANDATORY
 config BR2_sh4eb
 	bool "sh4eb (SH4 big endian)"
-	select BR2_ARCH_HAS_MMU_MANDATORY
 config BR2_sh4a
 	bool "sh4a (SH4A little endian)"
-	select BR2_ARCH_HAS_MMU_MANDATORY
 config BR2_sh4aeb
 	bool "sh4aeb (SH4A big endian)"
-	select BR2_ARCH_HAS_MMU_MANDATORY
 endchoice
 
 config BR2_ARCH