freeipmi: fix build on non-x86 musl

srcpkgs/freeipmi/patches/fix-build-musl-non-x86.patch

@@ -0,0 +1,23 @@
+Musl, unlike glibc, provides inb/outb but only on x86.
+Additionally, the iopl call is generally useless outside x86.
+
+--- libfreeipmi/driver/ipmi-kcs-driver.c
++++ libfreeipmi/driver/ipmi-kcs-driver.c
+@@ -162,7 +162,7 @@
+ #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+ # define _INB(port)  inb (port)
+ # define _OUTB(data, port)  outb (port, data)
+-#elif defined(HAVE_IOPL)
++#elif defined(HAVE_IOPL) && (defined(__x86_64__) || defined(__i386__))
+ # define _INB(port)  inb (port)
+ # define _OUTB(data, port)  outb (data, port)
+ #else
+@@ -509,7 +508,7 @@ ipmi_kcs_ctx_io_init (ipmi_kcs_ctx_t ctx)
+     }
+ #endif /* !USE_IOPERM */
+ #else  /* !__FreeBSD__ */
+-#if HAVE_IOPL
++#if defined(HAVE_IOPL) && (defined(__x86_64__) || defined(__i386__))
+   if (iopl (3) < 0)
+     {
+       KCS_ERRNO_TO_KCS_ERRNUM (ctx, errno);