x86: qemu: fix ACPI Kconfig options

CONFIG_GENENRATE_ACPI_TABLE controls the generation of ACPI table which
uses U-Boot's built-in methods and CONFIG_QEMU_ACPI_TABLE controls whether
to load ACPI table from QEMU's fw_cfg interface.

But with commit "697ec431469ce0a4c2fc2c02d8685d907491af84 x86: qemu: Drop
our own ACPI implementation", there is only one way to support ACPI table
for QEMU targets which is the fw_cfg interface. Having two Kconfig options
for this purpose is not necessary any more, so this patch consolidates
the two.

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 396023e..5a1e7a5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -439,21 +439,13 @@
 config GENERATE_ACPI_TABLE
 	bool "Generate an ACPI (Advanced Configuration and Power Interface) table"
 	default n
+	select CMD_QEMU_FW_CFG if QEMU
 	help
 	  The Advanced Configuration and Power Interface (ACPI) specification
 	  provides an open standard for device configuration and management
 	  by the operating system. It defines platform-independent interfaces
 	  for configuration and power management monitoring.
 
-config QEMU_ACPI_TABLE
-	bool "Load ACPI table from QEMU fw_cfg interface"
-	depends on GENERATE_ACPI_TABLE && QEMU
-	default y
-	help
-	  By default, U-Boot generates its own ACPI tables. This option, if
-	  enabled, disables U-Boot's version and loads ACPI tables generated
-	  by QEMU.
-
 config GENERATE_SMBIOS_TABLE
 	bool "Generate an SMBIOS (System Management BIOS) table"
 	default y