Makefile*: remove powerpcspe

As reported on the freebsd-announce mailing list[1] FreeBSD is
continuing to retire 32-bit support.  Remove powerpcspe from build
infrastructure.

[1] https://lists.freebsd.org/archives/freebsd-announce/2024-February/000117.html

Signed-off-by: Minsoo Choo <minsoochoo0122@proton.me>
Reviewed by:	jhibbits, emaste
Pull request:	https://github.com/freebsd/freebsd-src/pull/1914

share/mk/bsd.cpu.mk

@@ -323,15 +323,10 @@ CFLAGS += -mfloat-abi=softfp
 . endif
 .endif
 
-.if ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpcspe"
+.if ${MACHINE_ARCH} == "powerpc"
 LDFLAGS.bfd+= -Wl,--secure-plt
 .endif
 
-.if ${MACHINE_ARCH} == "powerpcspe"
-CFLAGS += -mcpu=8548 -mspe
-CFLAGS.gcc+= -mabi=spe -mfloat-gprs=double -Wa,-me500
-.endif
-
 .if ${MACHINE_CPUARCH} == "riscv"
 CFLAGS += -march=rv64imafdc -mabi=lp64d
 .endif

share/mk/bsd.endian.mk

@@ -9,8 +9,7 @@ TARGET_ENDIANNESS= 1234
 CAP_MKDB_ENDIAN= -l
 LOCALEDEF_ENDIAN= -l
 .elif ${MACHINE_ARCH} == "powerpc" || \
-    ${MACHINE_ARCH} == "powerpc64" || \
-    ${MACHINE_ARCH} == "powerpcspe"
+    ${MACHINE_ARCH} == "powerpc64"
 TARGET_ENDIANNESS= 4321
 CAP_MKDB_ENDIAN= -b
 LOCALEDEF_ENDIAN= -b

share/mk/bsd.opts.mk

@@ -99,8 +99,7 @@ __DEFAULT_DEPENDENT_OPTIONS = \
 # some memory-hungry workloads.
 #
 .if ${MACHINE_ARCH} == "armv7" \
-    || ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" \
-    || ${MACHINE_ARCH} == "powerpcspe"
+    || ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc"
 __DEFAULT_NO_OPTIONS+= PIE
 .else
 __DEFAULT_YES_OPTIONS+=PIE