rockchip: Add TPL_MAX_SIZE for RK3288

Per Kever Yang, 32768 is a reasonable max size for TPL on RK3288.

Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 6dc8e3a..b008241 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -81,6 +81,9 @@
 config TPL_TEXT_BASE
 	default 0xff704000
 
+config TPL_MAX_SIZE
+	default 32768
+
 endif
 
 config ROCKCHIP_RK3328