ARM: AMBA: Add pclk definition for platforms using primecells

Add a dummy clk definition for the APB pclk signal on all platforms
using the AMBA bus infrastructure.  This ensures that these platforms
continue to work when the core amba bus code controls the APB pclk.

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

arch/arm/mach-omap2/clock3xxx_data.c

@@ -3166,6 +3166,10 @@ static struct clk uart4_ick_am35xx = {
 	.recalc		= &followparent_recalc,
 };
 
+static struct clk dummy_apb_pclk = {
+	.name		= "apb_pclk",
+	.ops		= &clkops_null,
+};
 
 /*
  * clkdev
@@ -3173,6 +3177,7 @@ static struct clk uart4_ick_am35xx = {
 
 /* XXX At some point we should rename this file to clock3xxx_data.c */
 static struct omap_clk omap3xxx_clks[] = {
+	CLK(NULL,	"apb_pclk",	&dummy_apb_pclk,	CK_3XXX),
 	CLK(NULL,	"omap_32k_fck",	&omap_32k_fck,	CK_3XXX),
 	CLK(NULL,	"virt_12m_ck",	&virt_12m_ck,	CK_3XXX),
 	CLK(NULL,	"virt_13m_ck",	&virt_13m_ck,	CK_3XXX),