[ARM] pxa: fix frequency scaling for pcmcia/pxa2xx_base

The MCxx values must be based off memory clock, not CPU core clock.

This also fixes the bug where on some machines the LCD went crazy
while using PCMCIA.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Reviewed-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

drivers/pcmcia/pxa2xx_base.c

@@ -178,7 +178,6 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       unsigned long val,
 			       struct cpufreq_freqs *freqs)
 {
-#warning "it's not clear if this is right since the core CPU (N) clock has no effect on the memory (L) clock"
 	switch (val) {
 	case CPUFREQ_PRECHANGE:
 		if (freqs->new > freqs->old) {
@@ -186,7 +185,7 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       "pre-updating\n",
 			       freqs->new / 1000, (freqs->new / 100) % 10,
 			       freqs->old / 1000, (freqs->old / 100) % 10);
-			pxa2xx_pcmcia_set_mcxx(skt, freqs->new);
+			pxa2xx_pcmcia_set_timing(skt);
 		}
 		break;
 
@@ -196,7 +195,7 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       "post-updating\n",
 			       freqs->new / 1000, (freqs->new / 100) % 10,
 			       freqs->old / 1000, (freqs->old / 100) % 10);
-			pxa2xx_pcmcia_set_mcxx(skt, freqs->new);
+			pxa2xx_pcmcia_set_timing(skt);
 		}
 		break;
 	}