powerpc: P1025RDB: Separate from P1_P2_RDB_PC in Kconfig

Use TARGET_P1025RDB instead of sharing with P1_P2_RDB_PC to
simplify Kconfig and config macros.

Remove macro CONFIG_P1025RDB.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/configs/P1025RDB_36BIT_defconfig b/configs/P1025RDB_36BIT_defconfig
index d94c7af..2715182 100644
--- a/configs/P1025RDB_36BIT_defconfig
+++ b/configs/P1025RDB_36BIT_defconfig
@@ -1,12 +1,11 @@
 CONFIG_PPC=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_P1_P2_RDB_PC=y
+CONFIG_TARGET_P1025RDB=y
 CONFIG_PHYS_64BIT=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="P1025RDB"
 CONFIG_BOOTDELAY=10
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_MMC=y
diff --git a/configs/P1025RDB_NAND_defconfig b/configs/P1025RDB_NAND_defconfig
index 0cf5bd2..90e8367 100644
--- a/configs/P1025RDB_NAND_defconfig
+++ b/configs/P1025RDB_NAND_defconfig
@@ -2,12 +2,12 @@
 CONFIG_SPL_NAND_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_P1_P2_RDB_PC=y
+CONFIG_TARGET_P1025RDB=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="P1025RDB,NAND"
+CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_BOOTDELAY=10
 CONFIG_SPL=y
 CONFIG_TPL=y
diff --git a/configs/P1025RDB_SDCARD_defconfig b/configs/P1025RDB_SDCARD_defconfig
index c9eda77..90b005a 100644
--- a/configs/P1025RDB_SDCARD_defconfig
+++ b/configs/P1025RDB_SDCARD_defconfig
@@ -6,12 +6,12 @@
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_P1_P2_RDB_PC=y
+CONFIG_TARGET_P1025RDB=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="P1025RDB,SDCARD"
+CONFIG_SYS_EXTRA_OPTIONS="SDCARD"
 CONFIG_BOOTDELAY=10
 CONFIG_SPL=y
 CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT=y
diff --git a/configs/P1025RDB_SPIFLASH_defconfig b/configs/P1025RDB_SPIFLASH_defconfig
index a990a5e..0e5335d 100644
--- a/configs/P1025RDB_SPIFLASH_defconfig
+++ b/configs/P1025RDB_SPIFLASH_defconfig
@@ -7,12 +7,12 @@
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_P1_P2_RDB_PC=y
+CONFIG_TARGET_P1025RDB=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="P1025RDB,SPIFLASH"
+CONFIG_SYS_EXTRA_OPTIONS="SPIFLASH"
 CONFIG_BOOTDELAY=10
 CONFIG_SPL=y
 CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT=y
diff --git a/configs/P1025RDB_defconfig b/configs/P1025RDB_defconfig
index 80e997d..7094db4 100644
--- a/configs/P1025RDB_defconfig
+++ b/configs/P1025RDB_defconfig
@@ -1,11 +1,10 @@
 CONFIG_PPC=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_P1_P2_RDB_PC=y
+CONFIG_TARGET_P1025RDB=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="P1025RDB"
 CONFIG_BOOTDELAY=10
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_MMC=y