Revert "x86: Move FACP table into separate functions"

Before the culprit patch (see BugLink for the details):

  => acpi list
  Name      Base   Size  Detail
  ----  --------  -----  ------
  RSDP  000e4500     24  v02 U-BOOT
  RSDT  000e4530     38  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  XSDT  000e45e0     4c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  CSRT  000e5490     58  v00 U-BOOT U-BOOTBL 20220401 INTL 0
  FACP  000e54f0    114  v06 U-BOOT U-BOOTBL 20220401 INTL 0
  DSDT  000e4780    c06  v02 U-BOOT U-BOOTBL 10000 INTL 20200925
  FACS  000e4740     40
  MCFG  000e5610     3c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  SPCR  000e5650     50  v02 U-BOOT U-BOOTBL 20220401 INTL 0
  APIC  000e56a0     48  v02 U-BOOT U-BOOTBL 20220401 INTL 0

After the culprit patch:

  => acpi list
  Name      Base   Size  Detail
  ----  --------  -----  ------
  RSDP  000e4500     24  v02 U-BOOT
  RSDT  000e4530     34  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  XSDT  000e45e0     44  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  CSRT  000e53a0     58  v00 U-BOOT U-BOOTBL 20220401 INTL 0
  MCFG  000e5520     3c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  SPCR  000e5560     50  v02 U-BOOT U-BOOTBL 20220401 INTL 0
  APIC  000e55b0     48  v02 U-BOOT U-BOOTBL 20220401 INTL 0

As a result Linux kernel can't find mandatory tables and fails
to boot.

Hence, revert it for good.

This reverts commit 379d3c1fd6aa490b1ad5697525cfc89b615cf25a.

BugLink: https://lore.kernel.org/all/20220131225930.GJ7515@bill-the-cat/
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index c5b33dc..e3b7e9a 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -458,6 +458,21 @@
 }
 ACPI_WRITER(4gnvs, "GNVS", acpi_write_gnvs, 0);
 
+static int acpi_write_fadt(struct acpi_ctx *ctx,
+			   const struct acpi_writer *entry)
+{
+	struct acpi_fadt *fadt;
+
+	fadt = ctx->current;
+	acpi_create_fadt(fadt, ctx->facs, ctx->dsdt);
+	acpi_add_table(ctx, fadt);
+
+	acpi_inc(ctx, sizeof(struct acpi_fadt));
+
+	return 0;
+}
+ACPI_WRITER(5fact, "FADT", acpi_write_fadt, 0);
+
 /**
  * acpi_write_hpet() - Write out a HPET table
  *