vexpress/aemv8a: drop CONFIG_ARMV8_SWITCH_TO_EL1

To support KVM, we need to drop at EL2 and not EL1 before we boot Linux
kernel. This causes issues on platform with VHE and secondaries booting
at EL2 via TF-A PSCI CPU_ON call.

Cc: Ryan Harkin <ryan.harkin@linaro.org>
Cc: Liviu Dudau <liviu.dudau@foss.arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: David Feng <fenghua@phytium.com.cn>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Reviewed-by: NPeng Fan <peng.fan@nxp.com>

include/configs/vexpress_aemv8a.h

@@ -11,7 +11,6 @@
 #ifndef CONFIG_SEMIHOSTING
 #error CONFIG_TARGET_VEXPRESS64_BASE_FVP requires CONFIG_SEMIHOSTING
 #endif
-#define CONFIG_ARMV8_SWITCH_TO_EL1
 #endif
 
 #define CONFIG_REMAKE_ELF