linux-phytec-fsl

ARM: 8433/1: add a VMSPLIT_3G_OPT config option

Mimicking the same config option on x86, this allows for 1GB systems to
have their RAM entirely mapped as low memory.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>