ARM: Drop unreferenced CONFIG_* defines named after boards

The following config symbols are only defined once and never referenced
anywhere else:

CONFIG_AT91SAM9263EK
CONFIG_AT91SAM9RLEK
CONFIG_BARIX_IPAM390
CONFIG_BOARD_H2200
CONFIG_EP9301
CONFIG_KZM_A9_GT
CONFIG_PICOSAM
CONFIG_PLATINUM_PICON
CONFIG_PLATINUM_TITANIUM
CONFIG_PM9261
CONFIG_PM9263
CONFIG_PM9G45
CONFIG_SIEMENS_DRACO
CONFIG_SIEMENS_PXM2
CONFIG_SIEMENS_RUT
CONFIG_SMDKC100
CONFIG_SMDKV310
CONFIG_STM32F4DISCOVERY

Most of them are config symbols named after the respective boards which
seems to have been a standard practice at some point.

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>

scripts/config_whitelist.txt

@@ -78,7 +78,6 @@ CONFIG_AT91RM9200
 CONFIG_AT91RM9200EK
 CONFIG_AT91SAM9260EK
 CONFIG_AT91SAM9261EK
-CONFIG_AT91SAM9263EK
 CONFIG_AT91SAM9G10
 CONFIG_AT91SAM9G10EK
 CONFIG_AT91SAM9G20EK
@@ -86,7 +85,6 @@ CONFIG_AT91SAM9G20EK_2MMC
 CONFIG_AT91SAM9G45EKES
 CONFIG_AT91SAM9G45_LCD_BASE
 CONFIG_AT91SAM9M10G45EK
-CONFIG_AT91SAM9RLEK
 CONFIG_AT91SAM9_WATCHDOG
 CONFIG_AT91_CAN
 CONFIG_AT91_EFLASH
@@ -109,7 +107,6 @@ CONFIG_ATMEL_SPI0
 CONFIG_AT_TRANS
 CONFIG_AUTO_ZRELADDR
 CONFIG_BACKSIDE_L2_CACHE
-CONFIG_BARIX_IPAM390
 CONFIG_BAT_PAIR
 CONFIG_BAT_RW
 CONFIG_BCH_CONST_M
@@ -132,7 +129,6 @@ CONFIG_BOARD_AXM
 CONFIG_BOARD_COMMON
 CONFIG_BOARD_EARLY_INIT_R
 CONFIG_BOARD_ECC_SUPPORT
-CONFIG_BOARD_H2200
 CONFIG_BOARD_IS_OPENRD_BASE
 CONFIG_BOARD_IS_OPENRD_CLIENT
 CONFIG_BOARD_IS_OPENRD_ULTIMATE
@@ -544,7 +540,6 @@ CONFIG_ENV_UBI_MTD
 CONFIG_ENV_UBI_VOLUME_REDUND
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 CONFIG_ENV_VERSION
-CONFIG_EP9301
 CONFIG_EP9302
 CONFIG_EP9307
 CONFIG_EP9312
@@ -1165,7 +1160,6 @@ CONFIG_KVM_GUEST
 CONFIG_KW88F6192
 CONFIG_KW88F6281
 CONFIG_KW88F6702
-CONFIG_KZM_A9_GT
 CONFIG_L1_INIT_RAM
 CONFIG_L2_CACHE
 CONFIG_LAN91C96_USE_32_BIT
@@ -1561,7 +1555,6 @@ CONFIG_PHY_MAX_ADDR
 CONFIG_PHY_MODE_NEED_CHANGE
 CONFIG_PHY_RESET
 CONFIG_PHY_RESET_DELAY
-CONFIG_PICOSAM
 CONFIG_PIGGY_MAC_ADRESS_OFFSET
 CONFIG_PIXIS_BRDCFG0_SPI
 CONFIG_PIXIS_BRDCFG0_USB2
@@ -1578,15 +1571,10 @@ CONFIG_PL01x_PORTS
 CONFIG_PLATFORM_ENV_SETTINGS
 CONFIG_PLATINUM_BOARD
 CONFIG_PLATINUM_CPU
-CONFIG_PLATINUM_PICON
 CONFIG_PLATINUM_PROJECT
-CONFIG_PLATINUM_TITANIUM
 CONFIG_PLL1_CLK_FREQ
 CONFIG_PLL1_DIV2_CLK_FREQ
 CONFIG_PM
-CONFIG_PM9261
-CONFIG_PM9263
-CONFIG_PM9G45
 CONFIG_PMC_BR_PRELIM
 CONFIG_PMC_OR_PRELIM
 CONFIG_PMECC_CAP
@@ -1865,10 +1853,7 @@ CONFIG_SH_SDHI_FREQ
 CONFIG_SH_SDRAM_OFFSET
 CONFIG_SH_SPI_BASE
 CONFIG_SH_TMU_CLK_FREQ
-CONFIG_SIEMENS_DRACO
 CONFIG_SIEMENS_MACH_TYPE
-CONFIG_SIEMENS_PXM2
-CONFIG_SIEMENS_RUT
 CONFIG_SIMU
 CONFIG_SKIP_LOCAL_MAC_RANDOMIZATION
 CONFIG_SKIP_LOWLEVEL_INIT
@@ -1883,8 +1868,6 @@ CONFIG_SMC_AUTONEG_TIMEOUT
 CONFIG_SMC_USE_32_BIT
 CONFIG_SMC_USE_IOFUNCS
 CONFIG_SMDK5420
-CONFIG_SMDKC100
-CONFIG_SMDKV310
 CONFIG_SMP_PEN_ADDR
 CONFIG_SMSC_LPC47M
 CONFIG_SMSC_SIO1007
@@ -2072,7 +2055,6 @@ CONFIG_STACKBASE
 CONFIG_STANDALONE_LOAD_ADDR
 CONFIG_STATIC_BOARD_REV
 CONFIG_STD_DEVICES_SETTINGS
-CONFIG_STM32F4DISCOVERY
 CONFIG_STM32_FLASH
 CONFIG_STM32_HZ
 CONFIG_STRIDER