ARM: ICST: merge common ICST VCO structures

The structures for the ICST307 and ICST525 VCO devices are
identical, so merge them together.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 0058c93..dfb961b 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -40,7 +40,7 @@
 	struct clk_lookup *clks[3];
 };
 
-static const struct icst525_params impd1_vco_params = {
+static const struct icst_params impd1_vco_params = {
 	.ref		= 24000,	/* 24 MHz */
 	.vco_max	= 200000,	/* 200 MHz */
 	.vd_min		= 12,
@@ -49,7 +49,7 @@
 	.rd_max		= 120,
 };
 
-static void impd1_setvco(struct clk *clk, struct icst525_vco vco)
+static void impd1_setvco(struct clk *clk, struct icst_vco vco)
 {
 	struct impd1_module *impd1 = clk->data;
 	int vconr = clk - impd1->vcos;