soc/amd/cezanne/fsp_m_parameters: add curly braces around else block

Since the if block contains multiple statements, it uses curly braces
around them, so also add curly braces around the else block even though
it only contains one statement.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia8d6b45ec16916ff77078446414de259cffa1475
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59070
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/cezanne/fsp_m_params.c

@@ -153,9 +153,9 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 		mcfg->usb_phy->Version_Major = 0xd;
 		mcfg->usb_phy->Version_Minor = 0x6;
 		mcfg->usb_phy->TableLength = 100;
-	}
-	else
+	} else {
 		mcfg->usb_phy = NULL;
+	}
 
 	fsp_fill_pcie_ddi_descriptors(mcfg);
 	fsp_assign_ioapic_upds(mcfg);