asmc(4): Stop building it on i386, as it supports only 64-bit chipsets

Reported by:    ngie
Fixes:          fde9fe1821 ("i386: Fix kernel compilation after introduction of ASMC_DEBUG option")
Sponsored by:   The FreeBSD Foundation

sys/conf/files.amd64

@@ -112,6 +112,7 @@ crypto/openssl/amd64/sha512-x86_64.S	optional ossl
 crypto/openssl/amd64/ossl_aes_gcm_avx512.c	optional ossl
 crypto/openssl/ossl_aes_gcm.c	optional ossl
 dev/amdgpio/amdgpio.c		optional	amdgpio
+dev/asmc/asmc.c			optional	asmc isa
 dev/axgbe/if_axgbe_pci.c	optional	axp
 dev/axgbe/xgbe-desc.c		optional	axp
 dev/axgbe/xgbe-dev.c		optional	axp

sys/conf/files.x86

@@ -67,7 +67,6 @@ dev/amdsbwd/amdsbwd.c		optional	amdsbwd
 dev/amdsmn/amdsmn.c		optional	amdsmn | amdtemp
 dev/amdtemp/amdtemp.c		optional	amdtemp
 dev/arcmsr/arcmsr.c		optional	arcmsr pci
-dev/asmc/asmc.c			optional	asmc isa
 dev/atkbdc/atkbd.c		optional	atkbd atkbdc
 dev/atkbdc/atkbd_atkbdc.c	optional	atkbd atkbdc
 dev/atkbdc/atkbdc.c		optional	atkbdc

sys/conf/options.i386

@@ -112,6 +112,3 @@ MPTABLE_LINUX_BUG_COMPAT
 
 # x86 specific uart options
 UART_NS8250_EARLY_PORT	opt_uart.h
-
-# Enable asmc(4)-specific debug logic.
-ASMC_DEBUG		opt_asmc.h

sys/modules/Makefile

@@ -786,7 +786,6 @@ _amdsbwd=	amdsbwd
 _amdsmn=	amdsmn
 _amdtemp=	amdtemp
 _arcmsr=	arcmsr
-_asmc=		asmc
 .if ${MK_CRYPT} != "no" || defined(ALL_MODULES)
 _blake2=	blake2
 .endif
@@ -845,6 +844,7 @@ _x86bios=	x86bios
 
 .if ${MACHINE_CPUARCH} == "amd64"
 _amdgpio=	amdgpio
+_asmc=		asmc
 _ccp=		ccp
 _enic=		enic
 _iavf=		iavf