arm64: versal: Remove xilinx_versal_mini_qspi.h configs

The commit eaf6ea6a1dc1 ("Migrate CUSTOM_SYS_INIT_SP_ADDR to Kconfig using
system-constants.h") moved custom init stack pointer address to Kconfig
which ends up in situation that xilinx_versal_mini_qspi.h is not
needed anymore. That's why remove the file and move defconfigs directly to
xilinx_versal_mini.h configuration.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/2d7276ab8d4cb1d245b64287fb59c79325513f22.1674041200.git.michal.simek@amd.com
diff --git a/configs/xilinx_versal_mini_defconfig b/configs/xilinx_versal_mini_defconfig
index 3c5ab01..463aee4 100644
--- a/configs/xilinx_versal_mini_defconfig
+++ b/configs/xilinx_versal_mini_defconfig
@@ -1,5 +1,5 @@
 CONFIG_ARM=y
-CONFIG_SYS_CONFIG_NAME="xilinx_versal_mini_qspi"
+CONFIG_SYS_CONFIG_NAME="xilinx_versal_mini"
 CONFIG_SYS_ICACHE_OFF=y
 CONFIG_COUNTER_FREQUENCY=100000000
 CONFIG_ARCH_VERSAL=y