soc/amd/common/espi_util: make decode enable parameter uint32_t

Since this is a bit mask applied to the raw value of a 32 bit register,
this should be a 32 bit unsigned type.

Change-Id: I9d9930963d8c827a84dc1f67e2f2fa8f95ab40f2
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44349
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/amd/common/block/lpc/espi_util.c

@@ -54,7 +54,7 @@ static void espi_write8(unsigned int reg, uint8_t val)
 	write8((void *)(espi_get_bar() + reg), val);
 }
 
-static void espi_enable_decode(int decode_en)
+static void espi_enable_decode(uint32_t decode_en)
 {
 	uint32_t val;
 
@@ -63,7 +63,7 @@ static void espi_enable_decode(int decode_en)
 	espi_write32(ESPI_DECODE, val);
 }
 
-static bool espi_is_decode_enabled(int decode)
+static bool espi_is_decode_enabled(uint32_t decode)
 {
 	uint32_t val;