man4: Move back allwinner man page to share/man/man4

But only install them for arm or aarch64 since they are used on both arch.

share/man/man4/Makefile

@@ -70,6 +70,9 @@ MAN=	aac.4 \
 	audit.4 \
 	auditpipe.4 \
 	aue.4 \
+	${_aw_gpio.4} \
+	${_aw_mmc.4} \
+	${_aw_rtc.4} \
 	axe.4 \
 	axge.4 \
 	bce.4 \
@@ -756,6 +759,12 @@ MLINKS+=xl.4 if_xl.4
 _armv8crypto.4=	armv8crypto.4
 .endif
 
+.if ${MACHINE_CPUARCH} == "arm" || ${MACHINE_CPUARCH} == "aarch64"
+_aw_gpio.4=	aw_gpio.4
+_aw_mmc.4=	aw_mmc.4
+_aw_rtc.4=	aw_rtc.4
+.endif
+
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 _acpi_asus.4=	acpi_asus.4
 _acpi_asus_wmi.4=	acpi_asus_wmi.4

share/man/man4/man4.arm/Makefile

@@ -2,10 +2,7 @@
 
 PACKAGE=runtime-manuals
 
-MAN=	aw_gpio.4 \
-	aw_mmc.4 \
-	aw_rtc.4 \
-	cgem.4 \
+MAN=	cgem.4 \
 	devcfg.4 \
 	mge.4 \
 	npe.4 \