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>

arch/x86/Kconfig

@@ -439,21 +439,13 @@ config GENERATE_MP_TABLE
 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

arch/x86/cpu/qemu/Makefile

@@ -8,4 +8,4 @@ ifndef CONFIG_EFI_STUB
 obj-y += car.o dram.o
 endif
 obj-y += cpu.o qemu.o
-obj-$(CONFIG_QEMU_ACPI_TABLE) += acpi_table.o
+obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o

arch/x86/lib/Makefile

@@ -31,7 +31,7 @@ obj-$(CONFIG_X86_RAMTEST) += ramtest.o
 obj-y += sfi.o
 obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += smbios.o
 obj-y	+= string.o
-ifndef CONFIG_QEMU_ACPI_TABLE
+ifndef CONFIG_QEMU
 obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
 endif
 obj-y	+= tables.o