CONFIG_ARCH_PXA is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
PXA2xx/PXA3xx-based
configname: CONFIG_ARCH_PXA
ARM system type
└─>PXA2xx/PXA3xx-based
In linux kernel since version 2.6.12
Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
selects
CONFIG_ARCH_HAS_CPUFREQCONFIG_ARCH_MTD_XIP
CONFIG_ARCH_REQUIRE_GPIOLIB
CONFIG_ARM_CPU_SUSPEND
CONFIG_AUTO_ZRELADDR
CONFIG_CLKDEV_LOOKUP
CONFIG_CLKSRC_MMIO
CONFIG_GENERIC_CLOCKEVENTS
CONFIG_GPIO_PXA
CONFIG_HAVE_IDE
CONFIG_MULTI_IRQ_HANDLER
CONFIG_PLAT_PXA
CONFIG_SPARSE_IRQ