ARM: uniphier: deassert RST_n of eMMC device for LD11/LD20

For LD11 and LD20 SoCs, the RST_n pin is asserted by default.  If
the EXT_CSD[162], bit[1:0] (RST_n_ENABLE) is fused, the eMMC device
would stay in the reset state until its RST_n pin is deasserted by
software.

Currently, this is cared by an ad-hoc way because the eMMC hardware
reset provider is not supported in U-Boot for now.  This code should
be re-written once the "mmc-pwrseq-emmc" binding is supported.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/init.h b/arch/arm/mach-uniphier/init.h
index be0ad6c..5c45f2d 100644
--- a/arch/arm/mach-uniphier/init.h
+++ b/arch/arm/mach-uniphier/init.h
@@ -118,6 +118,7 @@
 void uniphier_pro5_clk_init(void);
 void uniphier_pxs2_clk_init(void);
 void uniphier_ld11_clk_init(void);
+void uniphier_ld20_clk_init(void);
 
 unsigned int uniphier_boot_device_raw(void);
 int uniphier_pin_init(const char *pinconfig_name);